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
207304277Composite: 1 known prime factor
Factored
FactorDigitsBitsDate
1228397996587496409912166.72015-10-21 09:04:34
History
DateUserTypeResult
2015-10-21ConductorF
Factor: 122839799658749640991 / TF: 66-67
2013-08-03tscNF
no factor from 2^65 to 2^66
2011-05-11PiepenNF
no factor from 2^64 to 2^65