Marin Mersenne 2^P-1
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Great Internet Mersenne Prime Search
GIMPS
Finding World Record Primes Since 1996

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MnStatusDetails
81408911Factored
FactorDigitsBitsDate
51591562111328458996505429124470020420139128.62017-06-05 20:35:30
P-1 factors
DateFactorB1B2
2017-06-0551591562111328458996505429124470020420169000013800000
History
DateUserTypeResult
2017-06-05bamF-PM1
Factor: 515915621113284589965054291244700204201 / (P-1, B1=690000, B2=13800000)
2016-11-06TheJudgerNF
no factor from 2^74 to 2^75
2016-11-06TheJudgerNF
no factor from 2^73 to 2^74
2016-09-24Judge HaleNF
no factor from 2^72 to 2^73
2016-09-24Judge HaleNF
no factor from 2^71 to 2^72
2013-06-08processinfoNF
no factor from 2^70 to 2^71
2013-02-20GnorfeNF
no factor from 2^69 to 2^70
2013-02-19ITSNF
no factor from 2^68 to 2^69
2013-02-15Simon HarrisonNF
no factor from 2^67 to 2^68
2013-01-30phoenicisNF
no factor from 2^66 to 2^67
2011-02-21searchingforprimesNF
no factor from 2^65 to 2^66
2010-12-06Architects CubedNF
no factor from 2^64 to 2^65