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
167850721Composite: 1 known prime factor
Factored
FactorDigitsBitsDate
831850478372423833932066.22015-06-03 22:40:12
History
DateUserTypeResult
2015-06-03Alex_soldierF
Factor: 83185047837242383393 / TF: 66-67
2013-03-25RichardNF
no factor from 2^65 to 2^66
2011-02-15tscNF
no factor from 2^64 to 2^65
2010-07-07Charles A. MorrisNF
no factor from 2^63 to 2^64