Marin Mersenne 2^P-1
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GIMPS
Finding World Record Primes Since 1996

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MnStatusDetails
99947741Factored
FactorDigitsBitsDate
1975819722257563626681654670393097.32019-11-24 15:51:23
P-1 factors
DateFactorB1B2
2019-11-24197581972225756362668165467039840000840000
History
DateUserTypeResult
2019-11-24penluF-PM1
Factor: 197581972225756362668165467039 / (P-1, B1=840000, B2=840000, e=6, n=5760K CUDAPm1 v0.20)
2019-11-15TheJudgerNF
no factor from 2^76 to 2^77
2019-10-17Daniil TsarkovNF
no factor from 2^75 to 2^76
2019-01-04Gordon BowerNF
no factor from 2^74 to 2^75
2019-01-04Gordon BowerNF
no factor from 2^73 to 2^74
2019-01-04Gordon BowerNF
no factor from 2^72 to 2^73
2017-01-27monstNF
no factor from 2^71 to 2^72
2014-05-26tarNF
no factor from 2^70 to 2^71
2013-12-10CSLatDDNF
no factor from 2^69 to 2^70
2013-09-30Yury VorobyovNF
no factor from 2^68 to 2^69
2013-09-12processinfoNF
no factor from 2^67 to 2^68
2013-08-18RobishNF
no factor from 2^66 to 2^67
2012-05-08Jimmy BrüggemannNF
no factor from 2^65 to 2^66
2010-10-091997rj7NF
no factor from 2^64 to 2^65