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
538139909Composite: 1 known prime factor
Factored
FactorDigitsBitsDate
1386420387123682948632166.92015-11-02 20:40:20
History
DateUserTypeResult
2015-11-02Alexander DubrovinF
Factor: 138642038712368294863 / TF: 66-67*
2014-11-07sasakiNF
no factor from 2^65 to 2^66