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

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MnStatusDetails
156531913Composite: 1 known prime factor
Factored
FactorDigitsBitsDate
17390583146354886112357612580.52025-09-15 19:55:24
P-1 factors
DateFactorB1B2
2025-09-1517390583146354886112357611207000780227910
History
DateUserTypeResult
2025-09-15J. W.F-PM1
Factor: 1739058314635488611235761 / (P-1, B1=1207000, B2=780227910)
2025-05-18Erik WoutersNF
no factor from 2^77 to 2^78
2024-11-24David HruskaNF
no factor from 2^76 to 2^77
2024-08-19SRBaseNF
no factor from 2^75 to 2^76
2023-02-22SRBaseNF
no factor from 2^74 to 2^75
2021-11-20SRBaseNF
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
2018-03-04proxy2222NF
no factor from 2^70 to 2^71
2017-11-08La GüiraNF
no factor from 2^69 to 2^70
2017-03-12XolotlNF
no factor from 2^68 to 2^69
2016-05-07DerekNF
no factor from 2^67 to 2^68
2015-04-15tscNF
no factor from 2^66 to 2^67
2013-02-08Nathan EdingtonNF
no factor from 2^65 to 2^66
2011-01-25Mr-PlonkNF
no factor from 2^64 to 2^65