Generalized Fermat number (GFN) primes bases 2 thru 1030
to n=4194304 (2^22)
Started: Apr. 2, 2010
Last update: Nov. 29, 2016
Compiled by Gary Barnes
base | n is prime |
2 | 1, 2, 4, 8, 16 |
4 | 1, 2, 4, 8 |
6 | 1, 2, 4 |
8 | (not possible) |
10 | 1, 2 |
12 | 1 |
14 | 2 |
16 | 1, 2, 4 |
18 | 1 |
20 | 2, 4 |
22 | 1 |
24 | 2, 4 |
26 | 2 |
28 | 1, 4 |
30 | 1, 32 |
32 | (not possible) |
34 | 4 |
36 | 1, 2 |
38 | |
40 | 1, 2 |
42 | 1 |
44 | 16 |
46 | 1, 4, 512 |
48 | 4 |
50 | |
52 | 1 |
54 | 2, 4, 32 |
56 | 2, 4 |
58 | 1 |
60 | 1 |
62 | |
64 | (not possible) |
66 | 1, 2 |
68 | |
70 | 1 |
72 | 1 |
74 | 2, 4, 16 |
76 | 16 |
78 | 1 |
80 | 4 |
82 | 1, 4 |
84 | 2 |
86 | |
88 | 1, 4 |
90 | 2, 4 |
92 | |
94 | 2, 16 |
96 | 1, 32 |
98 | |
100 | 1 |
102 | 1, 64 |
104 | |
106 | 1, 4 |
108 | 1 |
110 | 2 |
112 | 1, 32 |
114 | 32 |
116 | 2 |
118 | 4, 8 |
120 | 2, 128 |
122 | |
124 | 2 |
126 | 1, 2 |
128 | (not possible) |
130 | 1, 2 |
132 | 4, 8, 32 |
134 | 2 |
136 | 1 |
138 | 1 |
140 | 4, 8 |
142 | 4 |
144 | |
146 | 2 |
148 | 1 |
150 | 1, 2, 2048 |
152 | 8 |
154 | 4 |
156 | 1, 2, 16, 32 |
158 | 16 |
160 | 2, 4 |
162 | 1, 64 |
164 | 4 |
166 | 1 |
168 | |
170 | 2 |
172 | 1 |
174 | 4 |
176 | 2, 16 |
178 | 1 |
180 | 1, 2, 4 |
182 | |
184 | 2 |
186 | |
188 | 16 |
190 | 1, 128 |
192 | 1 |
194 | 4 |
196 | 1 |
198 | 1, 4, 16 |
200 | |
202 | |
204 | 2, 4 |
206 | 2 |
208 | 8 |
210 | 1, 2, 4 |
212 | |
214 | |
216 | (not possible) |
218 | |
220 | 4 |
222 | 1 |
224 | 2 |
226 | 1 |
228 | 1, 4 |
230 | 2 |
232 | 1 |
234 | 128 |
236 | 2 |
238 | 1, 4 |
240 | 1, 2, 8 |
242 | 4, 8 |
244 | |
246 | |
248 | 4, 16 |
250 | 1, 2 |
252 | |
254 | 4 |
256 | 1, 2 |
258 | |
260 | 2 |
262 | 1 |
264 | 2 |
266 | 4 |
268 | 1 |
270 | 1, 2 |
272 | 4 |
274 | 64 |
276 | 1, 4 |
278 | 4, 256 |
280 | 1, 2 |
282 | 1 |
284 | 2 |
286 | |
288 | 4, 8, 16 |
290 | 8 |
292 | 1 |
294 | |
296 | 4 |
298 | |
300 | 2, 64 |
302 | |
304 | |
306 | 1, 2, 8, 16 |
308 | |
310 | 1 |
312 | 1, 4 |
314 | 2 |
316 | 1 |
318 | 16 |
320 | 4 |
322 | |
324 | |
326 | 2 |
328 | 4 |
330 | 1, 16 |
332 | 32 |
334 | 4 |
336 | 1 |
338 | |
340 | 2, 4 |
342 | 32 |
344 | |
346 | 1 |
348 | 1, 16 |
350 | 2 |
352 | 1, 4 |
354 | |
356 | |
358 | 1 |
360 | 32 |
362 | |
364 | 4 |
366 | 1 |
368 | |
370 | 16 |
372 | 1 |
374 | 4 |
376 | 32 |
378 | 1, 8 |
380 | |
382 | 1, 16 |
384 | 2 |
386 | 2 |
388 | 1 |
390 | |
392 | 8 |
394 | |
396 | 1, 2, 16 |
398 | |
400 | 1, 2 |
402 | |
404 | |
406 | 2 |
408 | 1 |
410 | |
412 | 64 |
414 | 4 |
416 | |
418 | 1 |
420 | 1, 2 |
422 | |
424 | |
426 | 8 |
428 | 32 |
430 | 1, 2, 4, 32 |
432 | 1, 32 |
434 | 8 |
436 | 2, 4 |
438 | 1 |
440 | 2 |
442 | 1, 4, 8 |
444 | 2 |
446 | |
448 | 1, 32 |
450 | |
452 | 16 |
454 | |
456 | 1, 16 |
458 | |
460 | 1 |
462 | 1 |
464 | 2 |
466 | 1, 2, 4 |
468 | |
470 | 2, 16 |
472 | 4 |
474 | 2, 16 |
476 | 4, 16 |
478 | 1, 16 |
480 | |
482 | |
484 | |
486 | 1 |
488 | 4 |
490 | 1, 2 |
492 | 4 |
494 | 4 |
496 | 2 |
498 | 1, 4 |
500 | |
502 | 1 |
504 | 4 |
506 | 128 |
508 | 1, 8 |
510 | 8 |
512 | (not possible) |
514 | |
516 | 4 |
518 | |
520 | 1 |
522 | 1 |
524 | |
526 | 4 |
528 | |
530 | |
532 | 128 |
534 | |
536 | 2 |
538 | |
540 | 1, 4, 8 |
542 | 8 |
544 | 2 |
546 | 1 |
548 | 128 |
550 | 4 |
552 | |
554 | 4 |
556 | 1, 2, 4 |
558 | |
560 | 16 |
562 | 1, 8, 32, 64 |
564 | |
566 | 4 |
568 | 1, 4, 16 |
570 | 1, 2 |
572 | |
574 | |
576 | 1, 2 |
578 | |
580 | |
582 | 4 |
584 | 2, 4 |
586 | 1 |
588 | 32 |
590 | |
592 | 1, 64 |
594 | 2 |
596 | 8 |
598 | 1, 16 |
600 | 1, 4 |
602 | |
604 | |
606 | 1 |
608 | |
610 | 8 |
612 | 1 |
614 | 256 |
616 | 1, 4 |
618 | 1 |
620 | |
622 | |
624 | 4 |
626 | |
628 | 4 |
630 | 1 |
632 | |
634 | 2 |
636 | 2 |
638 | |
640 | 1 |
642 | 1, 16 |
644 | 2 |
646 | 1, 2 |
648 | |
650 | |
652 | 1 |
654 | 2 |
656 | 4 |
658 | 1 |
660 | 1 |
662 | |
664 | 8 |
666 | |
668 | |
670 | |
672 | 1 |
674 | 2 |
676 | 1 |
678 | |
680 | 2, 8 |
682 | 1, 8 |
684 | |
686 | 2, 16 |
688 | 16 |
690 | 1, 2, 4, 16 |
692 | |
694 | |
696 | 2 |
698 | |
700 | 1, 2 |
702 | 4 |
704 | 2 |
706 | |
708 | 1 |
710 | 4 |
712 | |
714 | 2 |
716 | 2 |
718 | 1 |
720 | |
722 | |
724 | |
726 | 1, 32 |
728 | 64 |
730 | 4 |
732 | 1, 4, 8 |
734 | |
736 | 16 |
738 | 1, 4, 32 |
740 | 2 |
742 | 1, 4 |
744 | |
746 | |
748 | 4 |
750 | 1, 2 |
752 | |
754 | |
756 | 1 |
758 | 4 |
760 | 1, 2, 4 |
762 | |
764 | 2 |
766 | |
768 | 1, 4 |
770 | |
772 | 1, 4 |
774 | 16 |
776 | 16 |
778 | 4, 16 |
780 | 2 |
782 | 8 |
784 | 2 |
786 | 1, 4 |
788 | 4 |
790 | 16 |
792 | |
794 | |
796 | 1 |
798 | 4 |
800 | 4, 8 |
802 | |
804 | 32 |
806 | |
808 | 1, 8 |
810 | 1, 4 |
812 | |
814 | |
816 | 2 |
818 | |
820 | 1 |
822 | 1 |
824 | 1024 |
826 | 1, 2 |
828 | 1 |
830 | 16 |
832 | 16 |
834 | 16 |
836 | |
838 | 1 |
840 | |
842 | |
844 | |
846 | 16 |
848 | |
850 | 32 |
852 | 1 |
854 | |
856 | 1, 4 |
858 | 1 |
860 | 2 |
862 | 1 |
864 | 2 |
866 | 8 |
868 | |
870 | |
872 | |
874 | 4 |
876 | 1, 8 |
878 | |
880 | 1 |
882 | 1 |
884 | 8, 32 |
886 | 1 |
888 | |
890 | 2 |
892 | 8, 256 |
894 | 4 |
896 | |
898 | 256 |
900 | 16 |
902 | |
904 | |
906 | 1, 2 |
908 | |
910 | 1, 2 |
912 | 4 |
914 | 4 |
916 | 8, 16 |
918 | 1, 8 |
920 | 2 |
922 | |
924 | |
926 | |
928 | 1, 4 |
930 | 2, 4 |
932 | |
934 | 8 |
936 | 1, 2, 4 |
938 | |
940 | 1 |
942 | |
944 | |
946 | 1, 2, 16 |
948 | |
950 | 2 |
952 | 1, 4 |
954 | |
956 | 8, 16 |
958 | |
960 | 2, 128 |
962 | 4 |
964 | |
966 | 1, 2, 4 |
968 | |
970 | 1 |
972 | 16 |
974 | |
976 | 1 |
978 | |
980 | |
982 | 1, 16 |
984 | 16 |
986 | 2, 4 |
988 | |
990 | 1, 8 |
992 | 4 |
994 | |
996 | 1, 4 |
998 | |
1000 | (not possible) |
1002 | |
1004 | 2 |
1006 | |
1008 | 1 |
1010 | 2 |
1012 | 1 |
1014 | |
1016 | |
1018 | 1, 16 |
1020 | 1 |
1022 | 8 |
1024 | (not possible) |
1026 | |
1028 | 8 |
1030 | 1 |