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
627312641Composite: 1 known prime factor
Factored
FactorDigitsBitsDate
1956628540754187418392167.42016-10-02 09:09:20
History
DateUserTypeResult
2016-10-02NipalF
Factor: 195662854075418741839 / TF: 67-70
2014-04-16sasakiNF
no factor from 2^65 to 2^67
2012-01-18BloodIceNF
no factor from 2^64 to 2^65
2010-08-03Architects CubedNF
no factor from 2^63 to 2^64