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

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MnStatusDetails
2465081Factored
FactorDigitsBitsDate
3049940426482350973032168.02020-05-31 20:43:21
ECM
DigitsB1Curves
255000043 / 280
Estimated T-Level: 20.8 ⓘ
TF below 2^64 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShift
Verified (Factored)Dwayne TowellD6C3685AD471F9AC0
Verified (Factored)1999-05-16thomas scholzD6C3685AD471F9AC2173712
Verified (Factored)2018-05-27kkmrkkblmbrbkD6C3685AD471F9AC708059
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2020-06-01atrench8010552150C411781234473453
Verified2020-06-01Klaus Nordmann8010552150C411781207111253
History
DateUserTypeResult
2020-06-01Klaus NordmannC-PRP
M2465081/304994042648235097303 : 8010552150C41178
PRP: Verified
PRP without proof (not generated)
2020-06-01atrenchC-PRP
M2465081/304994042648235097303 : 8010552150C41178
PRP: Verified
PRP without proof (not generated)
2020-05-31mnd9F-ECM
Factor: 304994042648235097303 / (ECM curve 1, B1=50000, B2=5000000, Sigma=74737313317594)
2019-06-24TJAOINF
no factor from 2^67 to 2^68
2019-04-18Sid & AndyNF-PM1
B1=6000000, B2=180000000, E=12
2018-05-27kkmrkkblmbrbkC-LL
D6C3685AD471F9AC
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
2010-11-23JossNF-PM1
B1=246508
2010-11-19JossNF-PM1
B1=20000
2009-01-15Sturle SundeNF
no factor from 2^60 to 2^61