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
428011847Composite: 1 known prime factor
Factored
FactorDigitsBitsDate
3826555397482681870872168.42016-12-15 11:00:08
History
DateUserTypeResult
2016-12-15ConductorF
Factor: 382655539748268187087 / TF: 68-69
2015-11-18sasakiNF
no factor from 2^66 to 2^68
2014-08-03sasaki3NF
no factor from 2^65 to 2^66