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

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MnStatusDetails
156155381Composite: 1 known prime factor
Factored
FactorDigitsBitsDate
1399753606046819887910880368633096.82025-09-12 12:22:17
P-1 factors
DateFactorB1B2
2025-09-1213997536060468198879108803686365500019703000
History
DateUserTypeResult
2025-09-12La GüiraF-PM1
Factor: 139975360604681988791088036863 / (P-1, B1=655000, B2=19703000)
2025-05-24brian-nebiusNF
no factor from 2^77 to 2^78
2024-11-16David-SNF
no factor from 2^76 to 2^77
2024-08-15SRBaseNF
no factor from 2^75 to 2^76
2023-02-18SRBaseNF
no factor from 2^74 to 2^75
2021-11-15SRBaseNF
no factor from 2^73 to 2^74
2018-08-18David HruskaNF
no factor from 2^72 to 2^73
2018-05-25David HruskaNF
no factor from 2^71 to 2^72
2018-02-02proxy2222NF
no factor from 2^70 to 2^71
2017-10-23La GüiraNF
no factor from 2^69 to 2^70
2017-03-08XolotlNF
no factor from 2^68 to 2^69
2016-05-05mikeblasNF
no factor from 2^67 to 2^68
2015-04-16etoomarNF
no factor from 2^66 to 2^67
2013-02-06KayJongsmaNF
no factor from 2^65 to 2^66
2011-01-24dslNF
no factor from 2^64 to 2^65