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

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MnStatusDetails
117198619Composite: 1 known prime factor
Factored
FactorDigitsBitsDate
4289937441271575009751272478.52023-02-27 12:31:40
P-1 factors
DateFactorB1B2
2023-02-27428993744127157500975127567000567000
History
DateUserTypeResult
2023-02-27ky0urakuF-PM1
Factor: 428993744127157500975127 / (P-1, B1=567000)
2022-05-08TheJudgerNF
no factor from 2^76 to 2^77
2021-06-30TheJudgerNF
no factor from 2^75 to 2^76
2021-01-14hktNF
no factor from 2^74 to 2^75
2020-02-14Niels_Mache_NextcloudNF
no factor from 2^73 to 2^74
2020-02-14Niels_Mache_NextcloudNF
no factor from 2^72 to 2^73
2015-04-09junkcalcNF
no factor from 2^71 to 2^72
2015-04-06junkcalcNF
no factor from 2^70 to 2^71
2015-04-01junkcalcNF
no factor from 2^69 to 2^70
2015-03-31junkcalcNF
no factor from 2^68 to 2^69
2015-03-28Josh FamestadNF
no factor from 2^67 to 2^68
2014-12-08ANONYMOUSNF
no factor from 2^66 to 2^67
2012-07-04carlos56NF
no factor from 2^65 to 2^66
2010-10-13lindeeNF
no factor from 2^64 to 2^65
2010-05-13garoNF
no factor from 2^63 to 2^64