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

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MnStatusDetails
105568007Factored
FactorDigitsBitsDate
438738962125547056389471267687322471137121.72021-04-06 20:27:59
P-1 factors
DateFactorB1B2
2021-04-06438738962125547056389471267687322471177200023229000
History
DateUserTypeResult
2021-04-06TheJudgerF-PM1
Factor: 4387389621255470563894712676873224711 / (P-1, B1=772000, B2=23229000, E=12)
2021-03-31RichD0NF
no factor from 2^75 to 2^76
2021-03-31lobsterfordinnerNF
no factor from 2^74 to 2^75
2020-04-07SRBaseNF
no factor from 2^73 to 2^74
2019-12-20Alvin BunkNF
no factor from 2^72 to 2^73
2018-02-12el groccoNF
no factor from 2^71 to 2^72
2014-10-17shaugeNF
no factor from 2^70 to 2^71
2014-10-17shaugeNF
no factor from 2^69 to 2^70
2014-10-17shaugeNF
no factor from 2^68 to 2^69
2014-06-23Travis Glenn RussoNF
no factor from 2^67 to 2^68
2014-06-17Travis Glenn RussoNF
no factor from 2^66 to 2^67
2012-05-12Torchwood InstituteNF
no factor from 2^65 to 2^66
2010-09-01carlos56NF
no factor from 2^64 to 2^65
2010-04-202knarfNF
no factor from 2^63 to 2^64