Marin Mersenne 2^P-1
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Great Internet Mersenne Prime Search
GIMPS
Finding World Record Primes Since 1996

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MnStatusDetails
257548051Composite: 1 known prime factor
Factored
FactorDigitsBitsDate
7868303951720452201032169.42019-04-28 21:21:05
History
DateUserTypeResult
2025-03-20James HeinrichF
Factor: 786830395172045220103 / TF: 69-70
2019-04-28Alexander TsupkoF
Factor: 786830395172045220103 / TF: 69-70
2018-06-15deo2016NF
no factor from 2^68 to 2^69
2016-05-18XZTNF
no factor from 2^67 to 2^68
2015-12-17GrunwalderGIMPNF
no factor from 2^66 to 2^67
2014-01-15ANONYMOUSNF
no factor from 2^65 to 2^66
2011-08-06Lukin DmitryNF
no factor from 2^64 to 2^65
2010-03-10Torchwood InstituteNF
no factor from 2^63 to 2^64
2010-03-10Torchwood InstituteNF
no factor from 2^62 to 2^63