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
61036883Factored
FactorDigitsBitsDate
21387987656209097591960.92013-04-15 16:14:12
P-1 factors
DateFactorB1B2
2013-04-15213879876562090975957000011115000
History
DateUserTypeResult
2022-03-29LordJuliusNF
no factor from 2^62 to 2^63
2013-04-15ixfd64F-PM1
Factor: 2138798765620909759
2013-01-19DubslowNF
no factor from 2^70 to 2^73
2011-11-07-Anonymous-NF
no factor from 2^69 to 2^70
2009-07-12Gymnasium_RaublingNF
no factor from 2^68 to 2^69
2009-03-13TRUSTNO1NF
no factor from 2^67 to 2^68
2009-03-09TRUSTNO1NF
no factor from 2^66 to 2^67
2009-03-04BIGMATHNF
no factor from 2^65 to 2^66
2009-03-03BIGMATHNF
no factor from 2^64 to 2^65
2009-03-02-Anonymous-NF
no factor from 2^63 to 2^64