Marin Mersenne 2^P-1
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GIMPS
Finding World Record Primes Since 1996

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MnStatusDetails
208000411Composite: 1 known prime factor
Factored
FactorDigitsBitsDate
5165149915135005799212168.82016-11-03 21:00:01
History
DateUserTypeResult
2016-11-03ConductorF
Factor: 516514991513500579921 / TF: 68-69
2016-09-02johnsilverNF
no factor from 2^67 to 2^68
2015-10-08SummyNF
no factor from 2^66 to 2^67
2013-08-05subgeniusNF
no factor from 2^65 to 2^66
2011-05-12dslNF
no factor from 2^64 to 2^65
2010-05-17Architects CubedNF
no factor from 2^63 to 2^64