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

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MnStatusDetails
72422513Factored
FactorDigitsBitsDate
638448521848725976051714305936161248737122.32015-07-26 15:00:14
P-1 factors
DateFactorB1B2
2015-07-26638448521848725976051714305936161248766500013965000
History
DateUserTypeResult
2015-07-26TheJudgerF-PM1
Factor: 6384485218487259760517143059361612487 / (P-1, B1=665000, B2=13965000, E=12)
2015-07-21bwnNF
no factor from 2^73 to 2^74
2015-07-21bwnNF
no factor from 2^72 to 2^73
2015-02-22srow7NF
no factor from 2^71 to 2^72
2013-01-01gregorNF
no factor from 2^70 to 2^71
2012-10-01Bold_SeekerNF
no factor from 2^69 to 2^70
2010-12-07symalladNF
no factor from 2^68 to 2^69
2010-09-29DjohnnieNF
no factor from 2^67 to 2^68
2010-09-22Bobbi and the StraysNF
no factor from 2^66 to 2^67
2010-09-20OtterNF
no factor from 2^65 to 2^66
2010-09-19Per JessenNF
no factor from 2^64 to 2^65
2008-09-19Wojciech FlorekNF
no factor to 2^64