Marin Mersenne 2^P-1
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Great Internet Mersenne Prime Search
GIMPS
Finding World Record Primes Since 1996

PrimeNet Exponent Status

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MnStatusDetails
61897271Factored
FactorDigitsBitsDate
8005034818748420526351132479.42013-02-26 20:24:48
P-1 factors
DateFactorB1B2
2013-02-2680050348187484205263511358500012138750
History
DateUserTypeResult
2022-03-29LordJuliusNF
no factor from 2^62 to 2^63
2013-02-26HBendtzF-PM1
Factor: 800503481874842052635113
2013-02-23RichD0NF
no factor from 2^72 to 2^73
2013-02-22bcp19NF
no factor from 2^71 to 2^72
2013-02-16XyzzyNF
no factor from 2^70 to 2^71
2011-11-25Zet_korNF
no factor from 2^69 to 2^70
2009-08-18usmfunNF
no factor from 2^68 to 2^69
2009-08-11arnaudNF
no factor from 2^67 to 2^68
2009-08-07riccardo.brascaNF
no factor from 2^66 to 2^67
2009-08-01FCG PrimesNF
no factor from 2^65 to 2^66
2009-07-26S36049NF
no factor from 2^64 to 2^65
2009-02-14abcNF
no factor from 2^63 to 2^64