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

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MnStatusDetails
121227311Composite: 1 known prime factor
Factored
FactorDigitsBitsDate
816267300599494797752821132686.12024-01-24 11:04:35
P-1 factors
DateFactorB1B2
2024-01-2481626730059949479775282113936000936000
History
DateUserTypeResult
2024-01-24Dmitry BolshakovF-PM1
Factor: 81626730059949479775282113 / (P-1, B1=936000)
2022-06-22TheJudgerNF
no factor from 2^76 to 2^77
2021-08-05Kevin JagetNF
no factor from 2^75 to 2^76
2021-08-01LOBESNF
no factor from 2^74 to 2^75
2021-07-05SRBaseNF
no factor from 2^73 to 2^74
2020-11-17SRBaseNF
no factor from 2^72 to 2^73
2015-05-23Earle LoweNF
no factor from 2^71 to 2^72
2015-05-23Earle LoweNF
no factor from 2^70 to 2^71
2013-11-10GrunwalderGIMPNF
no factor from 2^69 to 2^70
2013-11-10GrunwalderGIMPNF
no factor from 2^68 to 2^69
2013-11-10GrunwalderGIMPNF
no factor from 2^66 to 2^68
2012-08-10Mr-PlonkNF
no factor from 2^65 to 2^66
2010-10-21sasaki3NF
no factor from 2^64 to 2^65
2010-05-18Mr-PlonkNF
no factor from 2^63 to 2^64