Marin Mersenne 2^P-1
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GIMPS
Finding World Record Primes Since 1996

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MnStatusDetails
78282691Factored
FactorDigitsBitsDate
21769493341889776512419501238687667720139127.42015-05-27 07:39:14
P-1 factors
DateFactorB1B2
2015-05-272176949334188977651241950123868766772017350000
History
DateUserTypeResult
2015-05-27aurashiftF-PM1
Factor: 217694933418897765124195012386876677201 / (P-1, B1=735000)
2014-09-29Gordon SpenceNF
no factor from 2^73 to 2^74
2013-01-24davidb_KSNF
no factor from 2^72 to 2^73
2013-01-24davidb_KSNF
no factor from 2^71 to 2^72
2013-01-24davidb_KSNF
no factor from 2^70 to 2^71
2011-01-15P4 EENF
no factor from 2^69 to 2^70
2011-01-03LingUaanNF
no factor from 2^68 to 2^69
2011-01-02ANONYMOUSNF
no factor from 2^67 to 2^68
2011-01-02arnaudNF
no factor from 2^66 to 2^67
2010-10-26-Anonymous-NF
no factor from 2^65 to 2^66
2010-10-24Ethan O'ConnorNF
no factor from 2^64 to 2^65