Marin Mersenne 2^P-1
Username
Password
Forgot password?
Black
Great Internet Mersenne Prime Search
GIMPS
Finding World Record Primes Since 1996

PrimeNet Exponent Status

Exponent Range:










MnStatusDetails
2465129Factored
FactorDigitsBitsDate
1285977735725961201052792476.82018-07-02 05:55:20
ECM
DigitsB1Curves
255000031 / 280
Estimated T-Level: 20.6
TF below 2^63 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShift
Verified (Factored)Dwayne TowellEF6AAB65B3BE72E80
Verified (Factored)1999-10-21Eric ManochaEF6AAB65B3BE72E82021451
Verified (Factored)2018-05-27kkmrkkblmbrbkEF6AAB65B3BE72E8910862
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2018-07-02_p95holder_5FA32E9AD7E846B81169155953
Verified2018-07-04Martin Russell5FA32E9AD7E846B816945153
History
DateUserTypeResult
2018-09-28alpertronNF-PM1
B1=2000000, B2=60000000, E=12
2018-07-04Martin RussellC-PRP
M2465129/128597773572596120105279 : 5FA32E9AD7E846B8
PRP: Verified
PRP without proof (not generated)
2018-07-02_p95holder_C-PRP
M2465129/128597773572596120105279 : 5FA32E9AD7E846B8
PRP: Verified
PRP without proof (not generated)
2018-07-02Chang Chia-TcheF-ECM
Factor: 128597773572596120105279 / (ECM curve 1, B1=50000, B2=5000000)
2018-05-27kkmrkkblmbrbkC-LL
EF6AAB65B3BE72E8
2017-07-16Gordon SpenceNF
no factor from 2^66 to 2^67
2016-02-23Mark RoseNF
no factor from 2^59 to 2^60
2015-10-26ramgeisNF
no factor from 2^65 to 2^66
2015-03-03VictordeHollanderNF
no factor from 2^64 to 2^65
2015-03-03VictordeHollanderNF
no factor from 2^63 to 2^64
2013-10-22David CampeauNF-PM1
B1=590000, B2=15930000, E=12
2013-01-23dbaughNF
no factor from 2^62 to 2^63
2012-06-08Sebastian HornbostelNF
no factor from 2^61 to 2^62
2010-11-25JossNF-PM1
B1=246512
2010-11-19JossNF-PM1
B1=20000
2009-01-15Sturle SundeNF
no factor from 2^60 to 2^61