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

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MnStatusDetails
2494673Factored
FactorDigitsBitsDate
58140684548000186724012272.32020-08-29 21:52:33
ECM
DigitsB1Curves
255000073 / 280
Estimated T-Level: 21.3 ⓘ
TF below 2^66 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShift
Verified (Factored)Bruce Appleby3D70B245B9D518000
Verified (Factored)1999-07-12Stanley L. Slonka,Jr.3D70B245B9D51800471683
Verified (Factored)2018-06-01kkmrkkblmbrbk3D70B245B9D518001384845
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2020-08-30mnd9FD754362F9B77EBF1115196853
Verified2020-08-31kutensFD754362F9B77EBF1235185853
History
DateUserTypeResult
2020-08-31kutensC-PRP
M2494673/5814068454800018672401 : FD754362F9B77EBF
PRP: Verified
PRP without proof (not generated)
2020-08-30mnd9C-PRP
M2494673/5814068454800018672401 : FD754362F9B77EBF
PRP: Verified
PRP without proof (not generated)
2020-08-29Chang Chia-TcheF-ECM
Factor: 5814068454800018672401 / (ECM curve 7, B1=50000, B2=5000000, Sigma=1724799601270543)
2019-04-01TJAOINF
no factor from 2^67 to 2^68
2018-06-01kkmrkkblmbrbkC-LL
3D70B245B9D51800
2017-07-24Gordon SpenceNF
no factor from 2^66 to 2^67
2016-02-23Mark RoseNF
no factor from 2^59 to 2^60
2015-10-31ramgeisNF
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
2014-12-06mikrNF-PM1
B1=2382500, B2=85770100, E=12
2014-09-10JossNF-PM1
B1=120729
2013-12-04Jerry HallettNF
no factor from 2^62 to 2^63
2012-06-11Sebastian HornbostelNF
no factor from 2^61 to 2^62
2011-01-24Oscar ÖstlinNF-PM1
B1=95000, B2=1971250, E=6
2010-12-22JossNF-PM1
B1=20000
2009-01-11Sturle SundeNF
no factor from 2^60 to 2^61