user=S_K_ [2019-05-01 21:43:07] 571*2^1593567-1 is not prime. Res64: E0DC8909A3F5383B Time : 0.0 sec. user=S_K_ [2019-05-01 23:18:59] 405*2^1593568-1 is not prime. Res64: 360036A6F57A96C7 Time : 0.0 sec.