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
538181093Composite: 1 known prime factor
Factored
FactorDigitsBitsDate
1291063482045521720092166.82015-11-24 17:48:08
History
DateUserTypeResult
2015-11-24Alexander DubrovinF
Factor: 129106348204552172009 / TF: 66-67
2014-11-07sasakiNF
no factor from 2^65 to 2^66