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

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MnStatusDetails
120331537Factored
FactorDigitsBitsDate
287375968951292805979809912684.62023-11-26 08:41:01
P-1 factors
DateFactorB1B2
2023-11-262873759689512928059798099150500015183000
History
DateUserTypeResult
2023-11-26Denis PorvaF-PM1
Factor: 28737596895129280597980991 / (P-1, B1=505000, B2=15183000)
2022-06-20TheJudgerNF
no factor from 2^76 to 2^77
2021-07-15TheJudgerNF
no factor from 2^75 to 2^76
2021-07-15TheJudgerNF
no factor from 2^74 to 2^75
2021-06-20FlaukrotistNF
no factor from 2^73 to 2^74
2020-10-25SRBaseNF
no factor from 2^72 to 2^73
2015-11-08caddrNF
no factor from 2^71 to 2^72
2015-10-30sasakiNF
no factor from 2^70 to 2^71
2015-10-19-Anonymous-NF
no factor from 2^69 to 2^70
2015-10-17el groccoNF
no factor from 2^68 to 2^69
2015-01-21caddrNF
no factor from 2^67 to 2^68
2013-04-14E.LechnerNF
no factor from 2^66 to 2^67
2012-08-03sasaki3NF
no factor from 2^65 to 2^66
2010-10-18Thomas StorkNF
no factor from 2^64 to 2^65
2010-05-17Torchwood InstituteNF
no factor from 2^63 to 2^64