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
619899547Composite: 1 known prime factor
Factored
FactorDigitsBitsDate
3880576161168258412312168.42016-09-22 20:13:27
History
DateUserTypeResult
2016-09-22NipalF
Factor: 388057616116825841231 / TF: 67-70
2014-03-15sasakiNF
no factor from 2^65 to 2^67