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
538177067Composite: 1 known prime factor
Factored
FactorDigitsBitsDate
778012076331755108572066.12015-11-20 17:44:28
History
DateUserTypeResult
2015-11-20Alexander DubrovinF
Factor: 77801207633175510857 / TF: 66-67
2014-11-07sasakiNF
no factor from 2^65 to 2^66