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
619581731Composite: 1 known prime factor
Factored
FactorDigitsBitsDate
6472602653812805234572169.12016-09-27 20:42:21
History
DateUserTypeResult
2016-09-27NipalF
Factor: 647260265381280523457 / TF: 67-70
2014-03-15sasakiNF
no factor from 2^65 to 2^67