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
619940543Composite: 1 known prime factor
Factored
FactorDigitsBitsDate
2568382480452680480872167.82016-09-23 15:41:15
History
DateUserTypeResult
2016-09-23NipalF
Factor: 256838248045268048087 / TF: 67-70
2014-03-14sasakiNF
no factor from 2^65 to 2^67