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

PrimeNet Exponent Status

Exponent Range:










MnStatusDetails
4740419Factored
FactorDigitsBitsDate
9480839723.2old
237020951927.82008-09-08 00:11:56
426637711928.72008-09-08 00:11:57
578331119929.12008-09-08 00:11:57
995487991929.92008-09-08 00:11:57
29940960445911341.42008-09-30 21:36:08
677408449077358798812065.92015-02-20 21:06:41
ECM
DigitsB1Curves
25500003 / 280
Estimated T-Level: 20.1 ⓘ
TF below 2^62 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2017-11-19kkmrkkblmbrbkE3833909BA2D6ECC7382451153
Verified2018-03-14nate.andersE3833909BA2D6ECC7180126153
P-1 factors
DateFactorB1B2
2015-02-2067740844907735879881500000
History
DateUserTypeResult
2022-12-20LordJuliusNF
no factor from 2^64 to 2^65
2022-12-20LordJuliusNF
no factor from 2^63 to 2^64
2021-12-29Seth_TrNF-PM1
B1=1000000000, B2=2510175445470
2021-09-28Seth_TrNF-PM1
B1=1000000000, B2=251000000000
2019-12-28Seth_TrNF
no factor from 2^67 to 2^68
2019-08-27alpertronNF-PM1
B1=30000000, B2=1000000000, E=12
2019-06-18Seth_TrNF
no factor from 2^66 to 2^67
2018-03-14nate.andersC-PRP
M4740419/9480839/237020951/426637711/578331119/995487991/2994096044591/67740844907735879881 : E3833909BA2D6ECC
PRP: Verified
PRP without proof (not generated)
2017-11-19kkmrkkblmbrbkC-PRP
M4740419/9480839/237020951/426637711/578331119/995487991/2994096044591/67740844907735879881 : E3833909BA2D6ECC
PRP: Verified
PRP without proof (not generated)
2015-02-20pdazzlF-PM1
Factor: 67740844907735879881 / (P-1, B1=50000)
2008-09-30markrF
Factor: 2994096044591
2008-09-08Will EdgingtonF
Factor: 995487991
2008-09-08Will EdgingtonF
Factor: 578331119
2008-09-08Will EdgingtonF
Factor: 426637711
2008-09-08Will EdgingtonF
Factor: 237020951