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
77378839Factored
FactorDigitsBitsDate
289036532230945529507618232684.62015-04-26 14:32:06
P-1 factors
DateFactorB1B2
2015-04-262890365322309455295076182372000015120000
History
DateUserTypeResult
2022-06-27LordJuliusNF
no factor from 2^61 to 2^64
2015-04-26TheJudgerF-PM1
Factor: 28903653223094552950761823 / (P-1, B1=720000, B2=15120000, E=12)
2015-04-22gcardonaNF
no factor from 2^73 to 2^74
2013-01-10SWL551NF
no factor from 2^72 to 2^73
2013-01-10SWL551NF
no factor from 2^71 to 2^72
2013-01-10SWL551NF
no factor from 2^70 to 2^71
2010-10-29ddboy3NF
no factor from 2^69 to 2^70
2010-10-25sannerud.comNF
no factor from 2^68 to 2^69
2010-10-25sannerud.comNF
no factor from 2^67 to 2^68
2010-10-25SyntonyNF
no factor from 2^66 to 2^67
2010-10-01John RNF
no factor from 2^65 to 2^66
2010-10-01-Anonymous-NF
no factor from 2^64 to 2^65