user=juhehe
[2016-06-16 18:26:52]
439*2^1431491-1 is not prime.  Res64: F0C3ECCE748B8925  Time : 0.0 sec.
user=juhehe
[2016-06-16 20:58:26]
451*2^1431491-1 is not prime.  Res64: 2C4C7D871333742B  Time : 0.0 sec.