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
684211961Composite: 1 known prime factor
Factored
FactorDigitsBitsDate
2155319401111088540412167.52016-09-27 23:34:32
History
DateUserTypeResult
2016-09-27MonoryF
Factor: 215531940111108854041 / TF: 67-68
2014-08-04sasakiNF
no factor from 2^66 to 2^67
2014-02-03sasakiNF
no factor from 2^65 to 2^66
2012-01-31Andrew BNF
no factor from 2^64 to 2^65
2010-07-11Architects CubedNF
no factor from 2^63 to 2^64