Primes of the form k*10^n-1

Started: Oct. 30, 2007
Last update: Oct. 21, 2024

Bold = near repeat digit k
Dark green = Riesel k, i.e. proven no primes
Light blue = no known primes for k

Box = 30th prime for k
Black = generalized Woodall prime, i.e. n*10^n-1 (bases <= 1000 only)
Orange = twin prime with k*10^n+1
Salmon = twin prime with k*10^n-3
Light yellow = Sophie Germain prime with 2k*10^n-1
Dark yellow = Sophie Germain prime with k/2*10^n-1

Testing coordinated at Mersenneforum NPLB k*10^n-1 thread

Compiled by Gary Barnes

k # primes range of n tested n's prime
2 28 600K 1,   2, 3, 5, 7, 26, 27, 53, 147, 236, 248, 386, 401, 546, 785, 1325, 1755, 2906, 3020, 5407, 5697, 5969, 7517, 15749, 19233, 38232, 55347, (...) 1059002
3 18 750K   1,     3, 6,   7, 19, 27, 43, 55, 207, 1311, 3204, 7050, 9439, 26044, 33058, 34507, 49314, 119292
5 25 600K 2, 3, 4, 6, 14, 54, 210, 390, 594, 3460, 5028, 5219, 5332, 8072, 15796, 16131, 21456, 29282, 78790, 85142, 179972, 211029, 445773, 464843, 511056
6 30 600K   1, 2, 4, 5, 7, 10, 13, 22, 23, 28, 34, 40, 61, 73, 361, 490, 613, 1624, 2000, 2994, 4301, 4332, 18668, 32544, 34936, 267598, 270658, 293134, 319889, 414508
8 24 600K 1, 4, 5, 8, 10, 25, 49, 76, 128, 175, 238, 550, 796, 1219, 2012, 2846, 11336, 21296, 49808, 74318, 236891, (...) 608989, 1715905, 5112847
9 22 600K 1, 3, 7, 19, 29, 37, 93, 935, 8415, 9631, 11143, 41475, 41917, 48051, 107663, 212903, 223871, 260253, 364521, 383643, (...) 1009567, 1762063
11 24 600K 1, 9, 11, 17, 22, 29, 36, 37, 52, 166, 448, 2011, 3489, 4871, 6982, 10024, 16974, 33287, 47364, 58873, 126160, 234424, 382881, 524706
12 5 788K 5, 3191, 3785, 5513, 14717
14 26 100K 1, 2, 3, 4, 5, 16, 21, 23, 62, 175, 195, 206, 261, 347, 448, 494, 689, 987, 1361, 8299, 13225, 21513, 23275, 94058, (...) 132122, 302360
15 28 100K 1, 2, 15, 22, 27, 33, 38, 473, 519, 591, 699, 2273, 2476, 2985, 6281, 6947, 11990, 16828, 17096, 26236, 33459, 34963, 53815, (...) 112419, 167042, 192279, 229417, 339812
17 23 100K 2, 6, 9, 26, 33, 70, 112, 117, 138, 826, 1578, 1731, 2211, 2896, 3780, 9249, 15849, 24110, 28458, (...) 188726, 238719, 401202, 470880
18 17 163K     1, 4, 5, 17, 39, 90, 211, 395, 771, 1357, 1956, 12570, 14331, 88561, (...) 174417, 186876, 248271
21 20 50K 2, 6, 8, 18, 20, 32, 62, 132, 244, 276, 334, 390, 506, 2016, 4980, 12506, 15088, 16080, 27248, 34410
23 7 95K 1, 61, 69, 175, 4005, 5521, 36949
24 25 100K   1, 2, 4, 6, 10, 14, 56, 82, 129, 138, 342, 560, 1432, 1441, 2667, 2733, 3393, 4273, 6345, 9536, 19771, 26032, 44490, 46339, 47890
26 27 100K 3, 5, 11, 21, 29, 36, 62, 65, 66, 77, 110, 123, 185, 344, 480, 681, 1041, 1917, 2289, 2717, 5013, 5526, 15840, 22743, 26781, 30671, 40998
27 21 100K 1, 2, 5,    10, 16, 100, 131, 274, 370, 629, 1217, 1444, 1865, 1885, 2693, 4519, 7312, 11056, 15194, 25544, 45761
29 16 100K 4, 7, 9, 15, 28, 238, 907, 922, 949, 1197, 3634, 5980, 6267, 37804, 41961, 47968
32 4 50K 28, 5376, 9348, 33162
33 33 100K   2, 3,   4, 23, 41, 48, 94, 98, 107, 111, 177, 179, 186, 423, 646, 785, 890, 929, 1030, 1934, 2628, 4388, 5062, 5978, 6902, 7296, 14765, 19436, 22803, 29332, 41021, 70181, 89421
35 32 100K 1, 2, 5, 7, 9, 12, 13, 20, 21, 54, 56, 66, 77, 114, 211, 252, 391, 489, 1514, 2600, 3605, 3647, 6949, 7273, 10857, 13596, 14366, 15409, 17755, 27636, 29789, 41361
36 9 50K   1, 3, 55, 315, 1143, 3195, 4969, 11143, 34291
38 18 50K 1, 4, 7, 19, 20, 40, 152, 247, 352, 826, 1174, 2065, 2090, 5066, 5114, 21032, 22219, 49154
39 24 100K 1, 4, 7, 16, 19, 39, 59, 135, 403, 556, 791, 924, 2092, 2117, 2851, 3389, 4960, 5800, 5971, 7803, 14751, 19445, 26574, 43656
41 21 200K 1, 2, 4, 6, 17, 19, 36, 60, 70, 83, 92, 276, 324, 330, 486, 3514, 6062, 10760, 53958, 58920, 101892
42 15 100K   1, 3,   4, 9, 11, 12, 124, 197, 811, 843, 1071, 2069, 5747, 13719, 20244
44 14 100K 1, 6, 7, 9, 35, 59, 72, 163, 217, 566, 889, 3762, 8329, 66222
45 3 170K 1, 11959, 62745
47 12 50K 16, 58, 82, 142, 144, 1542, 3915, 8986, 23223, 27489, 28107, 42718
48 25 100K 1,   2, 5, 8, 20, 30, 31, 60, 84, 139, 180, 416, 654, 704, 1640, 6360, 8340, 8784, 12794, 17159, 19337, 24355, 30870, 50699, 52463
51 20 50K 1,   2, 6, 11, 26, 42, 67, 103, 155, 176, 182, 396, 800, 942, 947, 11996, 13362, 22022, 26340, 37416
53 24 100K 3, 4, 13, 17, 19, 25, 63, 175, 185, 223, 455, 519, 538, 563, 1372, 2079, 3067, 6880, 7300, 13561, 13787, 17452, 42371, 66987
54 9 50K   2,    10, 210, 334, 424, 452, 1888, 1914, 2688
56 8 100K 5, 15, 17, 75, 119, 209, 887, 1281
57 17 100K 1, 3, 8, 10, 23, 161, 338, 433, 995, 1673, 5908, 5960, 6070, 7216, 12016, 18023, 59251
59 17 50K 15, 20, 21, 26, 51, 80, 94, 180, 189, 339, 862, 981, 1420, 1975, 4294, 6145, 48265
62 16 100K 1, 2, 4, 7, 13, 28, 72, 132, 319, 1008, 3049, 3146, 9019, 11344, 11881, 46123
63 11 50K 2, 6, 20, 26, 102, 188, 548, 1154, 3383, 25244, 27575
65 11 50K 12, 14, 54, 84, 128, 324, 384, 990, 1310, 2162, 3150
66 25 100K   1, 2,   4, 7, 9, 25, 27, 52, 169, 172, 256, 289, 730, 867, 1744, 2620, 3121, 4011, 4900, 9508, 14815, 24945, 25119, 27034, 46905
68 11 100K 4, 5, 22, 59, 136, 213, 273, 305, 797, 7119, 61804
69 13 100K   2, 20, 132, 168, 2621, 3455, 3926, 5074, 7583, 9185, 29549, 60017, 61685
71 23 170K 1, 3, 9, 10, 13, 20, 29, 49, 50, 88, 130, 195, 391, 478, 573, 1535, 1759, 2091, 10193, 24308, 50481, 97761, 152873
72 23 100K   1,   3, 6, 7, 8, 9, 13, 30, 38, 39, 72, 327, 642, 690, 696, 1722, 3099, 4185, 5137, 10344, 60081, 75465, 93234
74 17 100K 1, 3, 13, 45, 63, 79, 263, 273, 387, 959, 1155, 3271, 3289, 6375, 6445, 7757, 36105, 89418
75 12 50K 2, 8, 22, 28, 250, 2464, 3044, 3428, 3584, 12488, 13126, 18818
77 20 100K 1, 2, 4, 8, 11, 17, 43, 77, 78, 82, 158, 205, 415, 462, 654, 1091, 2958, 4877, 7444, 25054
78 13 100K 3, 5, 7, 9, 17, 23, 293, 313, 535, 2765, 5575, 19245, 26413
81 16 50K   1, 5, 7, 11, 23, 41, 85, 151, 387, 673, 803, 2249, 6731, 15181, 34037, 43055
83 13 50K 1, 11, 34, 49, 77, 162, 242, 251, 841, 6673, 9142, 9769, 14914
84 18 100K 1, 4, 6, 51, 67, 1699, 1897, 3118, 4192, 8062, 12361, 13045, 14332, 21606, 28092, 37114, 39795, 40930
86 23 100K 1, 2, 3, 33, 50, 99, 120, 127, 228, 249, 461, 1370, 3227, 3463, 5274, 6278, 6975, 16713, 20568, 25670, 40658, 42132, 68874
87 7 50K 2, 32, 104, 3204, 6704, 10988, 11300
89 5 100K 33, 47, 345, 3507, 19685
92 18 1.635M 1, 2, 8, 13, 45, 46, 118, 463, 668, 1508, 3302, 3970, 4250, 5573, 544905, 833852, 1439761, 1585996
93 25 900K 1, 8, 9, 14, 54, 80, 487, 551, 600, 2502, 2544, 5593, 7949, 8635, 13407, 31128, 45504, 45933, 52303, 65121, 167501, 359354, 642225, (...) 1029523, 1170023
95 8 2.25M 3, 192, 1133, 4763, 5812, 48467, 130620, 466002
96 31 230K 10, 12, 63, 69, 156, 328, 340, 344, 444, 672, 894, 1464, 1670, 1708, 2010, 4306, 7888, 8864, 9478, 9621, 26004, 36992, 71600, 98738, 118949, 130565, 140326, 183452, 211983, 225618, (...) 846519
98 8 400K 90, 1928, 2206, 7244, 11110, 125056, 131394, 301354
99 22 400K 3, 4, 5, 9, 19, 25, 34, 70, 82, 718, 2035, 2494, 3369, 3953, 4219, 8524, 30943, 49375, 52082, 139670, 303255, (...) 1536527
101 22 50K 1, 2, 3, 7, 9, 21, 36, 39, 182, 362, 393, 602, 768, 1142, 2401, 3010, 3068, 3603, 7010, 10826, 20391, 38959
117 20 50K     2, 6,    10, 17, 18, 27, 100, 117, 143, 221, 266, 338, 390, 1044, 1311, 4266, 4947, 13751, 14834, 31722
183 16 100K 3, 8, 13, 110, 183, 415, 698, 7084, 8373, 8998, 13510, 15182, 20165, 31477, 57667, 64540
189 36 50K 1, 2, 3, 4, 5, 14, 23, 26, 32, 41, 43, 62, 79, 85, 96, 149, 281, 299, 335, 547, 784, 2464, 2482, 2849, 3218, 11450, 11641, 12964, 15320, 15376, 20525, 25042, 27659, 39200, 46205, (...) 287840
252 16 100K 6, 12, 22, 28, 122, 252, 442, 1358, 1538, 2252, 4430, 5130, 7562, 30090, 48836, 81456
396 12 50K 11, 12, 27, 87, 300, 324, 396, 641, 1260, 1421, 34475, 44046
455 30 50K 1, 7, 11, 12, 13, 17, 24, 25, 38, 47, 49, 54, 65, 74, 96, 104, 120, 295, 379, 874, 1488, 1667, 2717, 3585, 3851, 6716, 9542, 11453, 34284, 35315
471 18 50K 3, 6, 21, 79, 121, 127, 189, 639, 942, 2160, 6197, 7651, 11790, 19818, 19939, 27913, 42151, 48447
584 3 500K 85, 2377, 282073
653 18 50K 1, 3, 5, 13, 25, 45, 49, 65, 105, 127, 201, 325, 2005, 6525, 28721, 34533, 49393, (...) 1435026
962 30 100K 1, 2, 8, 14, 26, 32, 37, 56, 57, 62, 74, 92, 96, 136, 344, 379, 439, 778, 890, 1152, 1306, 2901, 4810, 5602, 5758, 8146, 11943, 22852, 61298, (...) 256726
992 19 230K 3, 9, 10, 72, 81, 84, 189, 322, 405, 556, 756, 10450, 20357, 26778, 29002, 44865, 95296, (...) 312136, 1533933
993 26 230K 1, 4,    12, 18, 19, 22, 46, 168, 488, 1363, 1469, 1625, 1913, 2614, 6888, 8616, 9042, 12380, 20611, 25818, 28357, 66848, 74977, 110605, 167446, (...) 1768283
995 34 300K 1, 8, 9, 13, 15, 20, 21, 23, 81, 100, 112, 262, 327, 407, 481, 745, 1216, 1804, 1909, 4317, 5896, 6469, 6537, 9133, 13397, 14785, 17294, 17869, 32189, 35212, 48891, 58623, 107888, 214337
996 21 230K 5, 7, 13, 20, 44, 49, 205, 272, 293, 326, 384, 473, 649, 734, 2004, 3893, 9600, 22011, 38400, 138936, (...) 370944
998 15 230K 10, 21, 31, 42, 66, 78, 99, 207, 814, 1546, 2565, 8965, 14092, 59472, 67867
999 21 230K 5, 6, 11, 50, 117, 347, 522, 551, 651, 995, 1485, 3346, 3644, 5079, 7632, 25979, 42633, 53714, 66683, 80727, 189584
1343 1 29.7K 29711
1358 20 10K 2, 15, 23, 32, 56, 63, 71, 159, 261, 518, 537, 563, 642, 819, 1290, 2355, 2529, 3453, 3461, 3821
1506 1 10K 872
1745 17 50K 1, 5, 6, 9, 11, 23, 24, 42, 45, 69, 105, 1745, 2299, 3461, 19137, 31476, 40199
1803 1 45.9K 45882
1935 1 51.8K 51836
2111 2 10K 1960, 3580
2276 1 10K 2726
2333 1 10K 2113
2843 16 50K 1, 9, 17, 32, 113, 500, 749, 891, 1442, 2234, 2377, 2843, 4559, 5303, 22112, 48821
3015 2 10K 1127, 2519
3332 2 10K 1952, 8532
3356 1 13.3K 13323
4016 3 10K 3647, 9017, 9053
4158 18 10K 1,   2, 7, 12, 49, 90, 131, 232, 368, 749, 1075, 1835, 3512, 4478, 5271, 5461, 5484, 6593
4421 0 5M  
4478 1 10K 4817
4577 1 10K 1145
4665 5 50K 1, 19, 25, 1609, 4665
5364 24 50K 1, 2, 6, 17, 35, 61, 65, 78, 85, 127, 147, 153, 341, 835, 875, 969, 2511, 2976, 5364, 5829, 6158, 6523, 30157, 40412
5499 1 10K 544
5897 1 10K 1159
6588 2 10K 5846, 7442
6633 6 10K 1036, 1183, 1753, 2146, 2479, 2599
6665 1 60.2K 60248
7019 1 882.4K 881309
7602 3 10K 555, 2205, 5497
8174 1 10K 753
8579 1 373.3K 373260
9461 2 10K 579, 2271
9701 2 10K 2574, 6538
9732 11 10K 8, 37, 83, 86, 119, 673, 1289, 1472, 2407, 2977, 6980
9824 4 10K 1017, 1857, 2307, 2517
9992 26 230K 2, 13, 15, 18, 50, 54, 75, 106, 127, 129, 171, 274, 858, 2282, 2787, 4494, 5600, 5992, 6242, 9159, 54544, 72627, 111559, 118138, 205959, (...) 1567410
9993 16 500K 1, 5, 12, 35, 47, 54, 353, 384, 401, 743, 2592, 4194, 6451, 11207, 12063, 237822
9995 19 230K 2, 4, 5, 25, 28, 31, 42, 84, 100, 150, 659, 4078, 6589, 7274, 10164, 20542, 62465, 129020, 168724
9996 27 230K 2, 4, 5, 6, 8, 11, 20, 36, 86, 208, 211, 283, 362, 700, 938, 1082, 1144, 1735, 2009, 3396, 8666, 15868, 18208, 40223, 44274, 61250, 81902
9998 3 1.6M 44, 4604, 17780
9999 26 230K 1, 7, 12, 15, 18, 19, 33, 46, 61, 62, 87, 99, 130, 765, 871, 946, 3423, 4377, 5588, 6900, 6974, 10527, 11866, 12925, 14954, 104331
10176 0   covering set = [7, 11, 13, 37]
17601 0   covering set = [7, 11, 13, 37]
19361 0   covering set = [7, 11, 13, 37]
21624 16 10K 4, 9, 10, 21, 45, 57, 86, 98, 140, 425, 1042, 1660, 1994, 6010, 8213, (...) 80000
23594 14 50K 4, 18, 916, 954, 1168, 1962, 3570, 4288, 4834, 9912, 23622, 38370, 47188, 49320
25827 0   covering set = [7, 11, 13, 37]
27147 0   covering set = [7, 11, 13, 37]
27686 0   covering set = [7, 11, 13, 37]
35916 0   covering set = [7, 11, 13, 37]
36048 0   covering set = [7, 11, 13, 37]
45462 0   covering set = [7, 11, 13, 37]
47213 0   covering set = [7, 11, 13, 37]
48036 0   covering set = [7, 11, 13, 37]
49248 0   covering set = [7, 11, 13, 37]
51051 28 20K 4, 14, 31, 42, 47, 48, 63, 94, 162, 214, 258, 264, 315, 344, 469, 905, 1215, 2271, 3252, 4508, 5472, 5731, 7374, 8053, 9916, 11810, 14787, 18986
54638 0   covering set = [7, 11, 13, 37]
62864 0   covering set = [7, 11, 13, 37]
64184 0   covering set = [7, 11, 13, 37]
64899 0   covering set = [7, 11, 13, 37]
72953 0   covering set = [7, 11, 13, 37]
73085 0   covering set = [7, 11, 13, 37]
75567 20 50K 24, 42, 45, 75, 80, 95, 205, 270, 282, 341, 617, 633, 889, 1921, 2606, 8072, 15875, 22955, 28129, (...) 151134
81066 35 30K 1, 2, 6, 10, 12, 16, 19, 24, 32,    34, 36, 41, 66, 86, 91, 124, 152, 176, 305, 562, 568, 838, 980, 986, 1217, 1452, 1646, 1692, 1847, 2386, 5810, 15016, 16134, 22288, 26302
82499 0   covering set = [7, 11, 13, 37]
85073 0   covering set = [7, 11, 13, 37]
86285 0   covering set = [7, 11, 13, 37]
93435 0   covering set = [7, 11, 13, 37]
95067 31 10K 3, 4, 6, 11, 14, 15, 16, 19, 22, 25, 30, 31, 39, 44, 49, 52, 79, 80, 88, 159, 191, 241, 256, 362, 424, 1312, 2268, 2750, 4977, 5712, 6967
97532 15 10K 3, 23, 26, 27, 32, 39, 77, 211, 274, 1183, 1945, 2157, 3140, 3351, 5594
99992 21 230K 3, 37, 51, 132, 157, 197, 252, 348, 577, 1020, 1653, 1827, 2917, 5151, 5177, 8259, 10101, 14351, 41681, 78714, 154737
99993 17 230K 2, 45, 54, 64, 362, 519, 534, 753, 5475, 11266, 15700, 27477, 61858, 100114, 132742, 171162, 223162
99995 16 230K 5, 14, 74, 102, 150, 570, 787, 1322, 2514, 5437, 21569, 25639, 54060, 73668, 87092, 115769
99996 20 230K   1,   3, 8, 15, 17, 19, 88, 173, 316, 356, 365, 637, 700, 778, 1102, 1168, 2992, 33085, 41492, 101108
99998 20 230K 1, 9, 21, 42, 61, 63, 122, 175, 254, 272, 502, 1737, 2786, 6688, 16473, 16909, 18836, 35894, 69842, (...) 389150
99999 18 230K 3, 16, 35, 45, 268, 347, 762, 1893, 5783, 20603, 22175, 22477, 24687, 92226, 94039, 108636, 134959, 223469
113756 22 50K 2, 5, 7, 11, 22, 92, 95, 115, 128, 130, 148, 152, 162, 200, 344, 359, 686, 894, 1303, 2060, 29959, (...) 341268
113946 14 12K 2,   3, 16, 79, 166, 195, 269, 453, 459, 549, 1048, 1449, 3332, 11111
168168 18 10K 1, 3, 4, 19, 23, 25, 61, 94, 350, 377, 432, 521, 618, 838, 2577, 2635, 2827, 3293
174228 14 10K 8, 16, 22, 86, 554, 572, 1100, 1220, 2032, 2628, 3532, 3788, 6938, 8360
217695 20 10K 1, 2, 3, 6, 13, 14, 74, 86, 92, 110, 115, 498, 1404, 2756, 2871, 2940, 4597, 7088, 8736, 8875
218313 12 10K 4, 23, 45, 204, 288, 377, 1068, 1588, 2662, 2700, 4030, 5529
325785 15 50K 3, 8, 83, 179, 287, 645, 657, 1685, 3233, 4722, 6623, 14570, 16601, 33927, (...) 500000
327327 23 10K 1, 3, 4, 5, 9, 31, 33, 40, 50, 52, 56, 73, 89, 105, 124, 178, 290, 1852, 2524, 4540, 8379, 8455, 8655
470796 18 10K 10, 34, 82, 89, 91, 101, 129, 135, 197, 479, 1000, 1433, 1469, 2837, 3027, 3385, 3637, 6250
499032 15 10K 5, 14, 63, 179, 200, 257, 1040, 1067, 1157, 1173, 1808, 2169, 2369, 4262, 6201
499238 14 50K 2, 16, 70, 122, 240, 560, 1421, 1694, 7157, 9380, 10722, 14162, 34523, (...) 1497714
519912 13 10K   1, 10, 15, 61, 73, 106, 219, 491, 511, 724, 1420, 4738, 7253
524427 8 50K 32, 107, 110, 269, 353, 854, 9569, (...) 524427
600921 12 10K 12, 17, 56, 188, 221, 704, 811, 955, 4651, 4661, 6218, (...) 68030
852852 18 10K   1, 3, 6, 7, 18, 23, 29, 41, 64, 65, 214, 217, 330, 367, 391, 1969, 2531, 2544
993993 24 150K 4, 7, 10,    12, 45, 46, 52, 70, 194, 346, 1342, 2182, 2227, 2508, 3903, 5596, 14032, 17450, 22399, 25713, 54680, 81127, 102232, 146499
999992 20 230K 5, 14, 18, 21, 162, 482, 677, 875, 1109, 1606, 7342, 10714, 11339, 13354, 13564, 25052, 54587, 55534, 80766, 214367
999993 23 230K 1, 3, 4, 7, 10, 23, 107, 122, 129, 185, 248, 331, 448, 728, 1813, 8839, 10643, 11228, 14709, 34917, 46843, 50211, 142359
999995 16 230K 6, 9, 33, 69, 164, 224, 315, 386, 523, 1279, 1332, 1515, 30842, 53577, 54458, 161570
999996 13 230K 4, 16, 31, 106, 229, 1270, 6406, 16999, 28855, 45814, 50097, 103662, 141157
999998 9 230K 10, 18, 48, 1960, 4066, 13776, 67764, 102904, 153256
999999 21 230K 6, 8, 12, 21, 32, 77, 123, 202, 217, 1168, 1894, 4225, 8817, 14697, 14912, 18598, 35875, 63331, 123275, 131926, 224997
1003205 46 314.7K 2, 3, 6, 14, 35, 45, 46, 47, 49, 53, 62, 105, 113, 139, 177, 181, 287, 291, 421, 423, 531, 561, 606, 632, 966, 1019, 1345, 1572, 1998, 2213, 2328, 3182, 3758, 4202, 6365, 7917, 8009, 13217, 30153, 46081, 51206, 89001, 217806, 258335, 291677, 314705
1336335 18 20K   5, 7, 15, 16, 19, 35, 45, 243, 475, 1662, 3534, 4525, 4653, 4996, 5131, 7792, 9605, 14751
1579134 12 20K 1, 3, 11, 21, 45, 69, 137, 219, 289, 1017, 1557, 11797
2501499 22 20K 1, 9, 62, 117, 128, 157, 399, 590, 725, 911, 1036, 1112, 1659, 2000, 4638, 5340, 7377, 7610, 9888, 9935, 16367, 17600
2555553 24 20K 1, 12, 13, 18, 23, 34, 68, 139, 145, 302, 799, 1346, 1482, 2070, 2208, 2509, 3082, 3401, 5190, 5665, 9289, 9904, 11950, 19120
2678676 22 20K 7, 10, 11, 13, 20, 54, 57, 59, 141, 150, 383, 659, 990, 1016, 1530, 1760, 1962, 4506, 5500, 9892, 10784, 17027
3099096 20 20K 10, 16, 17, 37, 96, 208, 282, 305, 522, 553, 634, 695, 703, 1161, 2771, 3378, 3504, 3752, 5394, 14891
3351348 24 20K 1, 2, 16, 17, 98, 139, 167, 185, 290, 384, 992, 1332, 1619, 1760, 1889, 2420, 3294, 3555, 4215, 4482, 5125, 12061, 13202, 13524
3456453 16 20K 3, 5, 14, 15, 209, 284, 743, 1358, 1468, 1552, 3529, 3637, 5703, 7001, 7009, 15688
4858854 12 20K 4, 14, 92,     119, 142, 721, 2001, 2924, 3105, 5831, 11934, 12033
5558745 18 50K 1, 4, 6, 63, 110, 121, 148, 168, 217, 756, 1516, 3284, 5066, 6079, 20413, 33334, 38538, 45834
6030027 13 20K 30, 45, 57, 105, 426, 540, 873, 1008, 1449, 2718, 2943, 7731, 10947
6033027 20 20K 6, 17, 48, 62, 99, 204, 234, 262, 479, 635, 699, 746, 1700, 1833, 1964, 2507, 2734, 5920, 7769, 7861
6206682 12 20K 2, 14, 43, 155, 407, 604, 689, 1081, 1300, 3043, 3278, 4495
6384378 27 20K 6,   7, 17, 18, 33, 34, 40, 47, 135, 198, 252, 308, 315, 436, 441, 497, 513, 1328, 2183, 5006, 5193, 6964, 10103, 11272, 11642, 13831, 14330
7015008 31 20K 1, 4, 6, 12, 18, 37,    65, 66, 114, 119, 318, 336, 363, 667, 726, 735, 1577, 1970, 2255, 2359, 2509, 3547, 3736, 3899, 4326, 6248, 9932, 11525, 11862, 14718, 17348
7048041 8 20K   6, 16, 26, 157, 1630, 2751, 3855, 5122
7216209 13 20K 1,     2, 5, 22, 250, 549, 822, 2196, 2536, 4180, 8632, 11857, 14288
8156148 15 20K 26, 31, 60, 329, 1486, 3030, 3837, 4480, 5080, 6520, 7581, 9337, 10912, 13126, 14002
8249241 9 20K 4, 8, 23, 28, 44, 158, 1599, 2508, 5607
9999992 21 100K 8, 15, 17, 18, 26, 41, 47, 50, 98, 121, 122, 162, 606, 761, 800, 858, 1242, 1665, 26193, (...) 130127, 360403
9999993 19 50K 31, 66, 81, 100, 187, 220, 519, 634, 909, 1159, 1788, 2040, 3264, 5014, 13471, (...) 195531, 234006, 331938, 335905
9999995 11 50K 8, 9, 11, 20, 40, 82, 365, 3800, 15980, 16384, (...) 218972
9999996 24 50K 1, 2, 5, 13, 19, 58, 119, 233, 398, 587, 793, 959, 1978, 2374, 2718, 3347, 3679, 5774, 14675, 19607, 31286, 31592, 37217, (...) 168751
9999998 16 50K 4, 10, 31, 89, 141, 145, 215, 499, 1004, 4070, 6315, 7401, 8359, (...) 181169, 249869, 369705
9999999 16 50K 1, 8, 29, 30, 66, 158, 278, 341, 377, 523, 959, 2592, 3387, 4267, 11174, (...) 255038
85408568 51 100K 2, 5, 6, 9, 12, 13, 15, 18, 22, 42, 50, 51, 82, 86, 88, 94, 105, 136, 154, 180, 192, 201, 282, 288, 330, 334, 342, 356, 379, 390, 549, 565, 598, 790, 2162, 2824, 3900, 4065, 4482, 5397, 8424, 9170, 11766, 13644, 15958, 23334, 49732, 71376, 98396, (...) 125358, 213475
99999992 17 106K 3, 9, 22, 23, 33, 35, 223, 295, 871, 1118, 1349, 1546, 1727, 2590, 2787, 3884, 35841
99999993 24 50K 1, 3, 27, 77, 85, 97, 115, 121, 145, 300, 423, 645, 711, 2004, 2215, 4269, 6897, 7849, 10404, 10809, 21753, 32509, (...) 106947, 180207
99999995 20 100K 5, 6, 9, 12, 22, 40, 70, 129, 138, 251, 306, 2802, 2951, 7228, 10198, 11266, 12059, 20104, 77998, (...) 386956
99999996 16 76K 11, 26, 58, 82, 105, 220, 570, 1378, 4030, 9638, 16419, 19248, 22584, 29118, 51324, 75442
99999998 7 500K 8, 848, 2376, 11296, 19552, 215816, 402536
99999999 16 103K 16, 28, 35, 56, 65, 137, 245, 291, 325, 367, 873, 1527, 1535, 4711, 12884, 16101
999999992 14 100K 3, 18, 51, 76, 122, 149, 443, 1682, 5535, 7089, 7248, 24513, 30034, 60016
999999993 16 100K 1, 8, 14, 23, 25, 191, 326, 577, 1189, 1240, 5923, 7765, 13894, 30997, 38360, 74966
999999995 15 75K 3, 14, 15, 69, 181, 218, 350, 2752, 3260, 4622, 9151, 14072, 14165, 15901, 59108
999999996 16 100K 2, 15, 17, 71, 77, 211, 281, 401, 1757, 9033, 10163, 17247, 33582, 36443, 52463, 63872
999999998 7 105K 66, 279, 334, 594, 3574, 6522, (...) 419343
999999999 15 50K 5, 9, 14, 24, 26, 78, 222, 735, 1341, 2798, 3501, 5103, 8726, 12362, (...) 180230
15243423902 32 50K 1, 2, 3, 4, 5, 6, 7, 8, 9, 93, 100, 118, 263, 296, 353, 388, 499, 505, 695, 723, 897, 1011, 2947, 2966, 7326, 10726, 11419, 17476, 21786, 24482, 48686, 48900
29086473969 46 50K 1, 3, 4, 8, 9, 12, 13, 14, 18, 19, 28, 29, 44, 46, 53, 80, 81, 85, 95, 139, 149, 150, 198, 423, 1151, 1231, 1337, 1421, 2826, 3058, 3574, 3951, 4319, 12598, 12951, 15863, 17668, 25245, 29676, 33421, (...) 76824, 92912, 96842, 147582, 222807, 254182
77930499731 52 50K 1, 4, 5, 8, 9, 10, 13, 14, 17, 22, 33, 46, 50, 53, 58, 61, 65, 71, 77, 94, 114, 118, 133, 141, 174, 176, 212, 213, 307, 327, 581, 669, 909, 1704, 1709, 1768, 1784, 2101, 2958, 3280, 9631, 11839, 12339, 16100, 17526, 25704, 36097, 45838, (...) 181444, 190310, 265846, 305969
45132842379618 64 300K 1, 5, 7, 10, 13, 14, 16, 21, 22, 37, 41, 51, 55, 60, 63, 82, 84, 90, 96, 105, 119, 165, 176, 197, 223, 247, 292, 307, 312, 314, 339, 356, 511, 554, 1098, 1247, 1772, 2801, 3219, 3423, 3960, 4085, 5878, 6562, 7667, 8650, 8981, 18907, 20740, 25622, 27748, 29703, 31835, 35890, 60533, 79715, 113231, 140934, 172380, 173121, 218810, 225030, 229204, 255848
1328671701593119457 49 50K 4, 11, 12, 13, 14, 15, 21, 37, 55, 62, 75, 80, 86, 94, 99, 100, 179, 227, 384, 394, 399, 452, 582, 593, 658, 725, 926, 1175, 1303, 1359, 1431, 1685, 1809, 1937, 2742, 3246, 3281, 3762, 4516, 5557, 6952, 7403, 9317, 11311, 14977, 15257, 18610, 23241, 39640
19178079668730696804601623 51 100K 2, 5, 9, 11, 13, 17, 20, 26, 32, 34, 38, 47, 49, 62, 63, 66, 83, 84, 115, 162, 200, 281, 294, 314, 334, 384, 389, 392, 401, 493, 683, 735, 843, 847, 1312, 1335, 3507, 6365, 6523, 7890, 10100, 12546, 18654, 19116, 20051, 23131, 28989, 31790, 38202, 59105, 89655
198720403123163585927608716 66 100K 2, 4, 5, 10, 11, 13, 29, 35, 39, 47, 54, 64, 66, 79, 82, 84, 86, 97, 98, 101, 103, 117, 123, 141, 146, 166, 172, 183, 194, 202, 254, 287, 289, 373, 449, 471, 560, 637, 730, 834, 901, 975, 1032, 1450, 2097, 2191, 2361, 2641, 3721, 4435, 5356, 5514, 6223, 7099, 9195, 10436, 10687, 17623, 20620, 20793, 24557, 29597, 41643, 53937, 65303, 99507
39483211672164281091
154776981*M(61)		 58 66.4K 2, 4, 5, 6, 10, 13, 14, 16, 21, 28, 30, 34, 52, 94, 96, 115, 148, 154, 180, 189, 190, 194, 210, 222, 247, 256, 305, 347, 406, 446, 510, 529, 1001, 1711, 1766, 1836, 2088, 2093, 3009, 3155, 3574, 3660, 3861, 3902, 4701, 4841, 4878, 5135, 5454, 8159, 9137, 11377, 17361, 21602, 22782, 24041, 25009, 66086

Information obtained from:
Top 5000 primes
Encyclopedia of integer sequences
Factorizations of near-repdigit numbers
Mersenneforum NPLB k*10^n-1 thread
Mersenneforum CRUS Sierpinski/Riesel Base 10 thread

Contributors:
Alex
axn1
Cruelty
David Broadhurst
gd_barnes
grobie
Jens K Andersen
kar_bon
Kosmaj
lsoule
Makoto Kamada
Ray Chandler
robert44444uk
rogue