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
619605317Composite: 1 known prime factor
Factored
FactorDigitsBitsDate
1917785949942001462872167.42016-09-30 04:14:13
History
DateUserTypeResult
2016-09-30NipalF
Factor: 191778594994200146287 / TF: 67-70
2014-03-15sasakiNF
no factor from 2^65 to 2^67
2012-01-15HardyP GermanyNF
no factor from 2^64 to 2^65
2010-08-02Architects CubedNF
no factor from 2^63 to 2^64