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

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MnStatusDetails
154333591Composite: 1 known prime factor
Factored
FactorDigitsBitsDate
125666887396731647885714857756204687937119.92025-05-20 21:49:39
P-1 factors
DateFactorB1B2
2025-05-20125666887396731647885714857756204687990000086361198
History
DateUserTypeResult
2025-05-20Ryan PropperF-PM1
Factor: 1256668873967316478857148577562046879 / (P-1, B1=900000, B2=86361198)
2024-12-14Jonathon NguyenNF
no factor from 2^76 to 2^77
2024-08-13SRBaseNF
no factor from 2^75 to 2^76
2023-02-16SRBaseNF
no factor from 2^74 to 2^75
2021-11-14SRBaseNF
no factor from 2^73 to 2^74
2017-10-14David HruskaNF
no factor from 2^72 to 2^73
2017-09-08David HruskaNF
no factor from 2^71 to 2^72
2017-08-08David HruskaNF
no factor from 2^70 to 2^71
2017-07-09La GüiraNF
no factor from 2^69 to 2^70
2017-03-02XolotlNF
no factor from 2^68 to 2^69
2016-05-03tscNF
no factor from 2^67 to 2^68
2015-04-07guruNF
no factor from 2^66 to 2^67
2013-01-30CorbyguyNF
no factor from 2^65 to 2^66
2011-02-01RichardNF
no factor from 2^64 to 2^65
2010-06-25Torchwood InstituteNF
no factor from 2^63 to 2^64