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
619777133Composite: 1 known prime factor
Factored
FactorDigitsBitsDate
1491389516310753418392167.02016-09-21 03:59:21
History
DateUserTypeResult
2016-09-21NipalF
Factor: 149138951631075341839 / TF: 67-70
2014-03-13sasakiNF
no factor from 2^65 to 2^67