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
238373893Composite: 1 known prime factor
Factored
FactorDigitsBitsDate
2547439935855529333932167.82016-10-06 23:33:54
History
DateUserTypeResult
2016-10-06Mikhail E. GolosovF
Factor: 254743993585552933393 / TF: 67-68
2015-11-28SADMASTERNF
no factor from 2^66 to 2^67
2013-10-18Yan Ruimin ChinaNF
no factor from 2^65 to 2^66
2011-07-05OS1NF
no factor from 2^64 to 2^65