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
238307749Composite: 1 known prime factor
Factored
FactorDigitsBitsDate
2569667719846989865272167.82016-10-06 21:05:47
History
DateUserTypeResult
2016-10-06Mikhail E. GolosovF
Factor: 256966771984698986527 / TF: 67-68
2015-11-27arnieNF
no factor from 2^66 to 2^67
2013-10-17Yan Ruimin ChinaNF
no factor from 2^65 to 2^66
2011-07-05impsNF
no factor from 2^64 to 2^65