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

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MnStatusDetails
121154791Composite: 1 known prime factor
Factored
FactorDigitsBitsDate
4146433268569147851126012478.52024-01-19 22:19:00
P-1 factors
DateFactorB1B2
2024-01-19414643326856914785112601909000422181060
History
DateUserTypeResult
2024-01-19Sergey NosovF-PM1
Factor: 414643326856914785112601 / (P-1, B1=909000, B2=422181060)
2022-06-22TheJudgerNF
no factor from 2^76 to 2^77
2021-07-25TheJudgerNF
no factor from 2^75 to 2^76
2021-07-25TheJudgerNF
no factor from 2^74 to 2^75
2021-07-05SRBaseNF
no factor from 2^73 to 2^74
2020-10-20SRBaseNF
no factor from 2^72 to 2^73
2015-07-20LookASNF
no factor from 2^71 to 2^72
2015-07-19bunddogNF
no factor from 2^70 to 2^71
2013-11-02GrunwalderGIMPNF
no factor from 2^69 to 2^70
2013-11-02GrunwalderGIMPNF
no factor from 2^68 to 2^69
2013-11-02GrunwalderGIMPNF
no factor from 2^66 to 2^68
2012-08-10Mr-PlonkNF
no factor from 2^65 to 2^66
2010-10-20Torchwood InstituteNF
no factor from 2^64 to 2^65
2010-05-18sasaki3NF
no factor from 2^63 to 2^64