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
278858197Composite: 1 known prime factor
Factored
FactorDigitsBitsDate
2533995253399822958232167.82016-12-10 10:59:58
History
DateUserTypeResult
2016-12-10SarnetskyF
Factor: 253399525339982295823 / TF: 67-68*
2016-01-16Jason UNF
no factor from 2^66 to 2^67
2013-12-14Yan Ruimin ChinaNF
no factor from 2^65 to 2^66
2011-09-11WizzardNF
no factor from 2^64 to 2^65
2010-04-05lindedNF
no factor from 2^63 to 2^64
2010-04-05lindedNF
no factor from 2^62 to 2^63