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

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MnStatusDetails
2737489Factored
FactorDigitsBitsDate
126032305144684108411512373.42020-08-05 21:32:34
ECM
DigitsB1Curves
255000034 / 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)Christophe Clavier9AADCF8D2CCA5EE60
Verified (Factored)1999-05-09Matthew Yarnell9AADCF8D2CCA5EE62331188
Verified (Factored)2018-08-10kkmrkkblmbrbk9AADCF8D2CCA5EE6881389
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2020-08-09fre_games9A1BFC570DE8A6C51155533553
Verified2020-08-09kutens9A1BFC570DE8A6C51207110753
History
DateUserTypeResult
2020-08-09kutensC-PRP
M2737489/12603230514468410841151 : 9A1BFC570DE8A6C5
PRP: Verified
PRP without proof (not generated)
2020-08-09fre_gamesC-PRP
M2737489/12603230514468410841151 : 9A1BFC570DE8A6C5
PRP: Verified
PRP without proof (not generated)
2020-08-05GANF-ECM
Factor: 12603230514468410841151 / (ECM curve 1, B1=50000, B2=5000000, Sigma=1456418356929361)
2019-02-15chuenkitNF
no factor from 2^67 to 2^68
2018-08-10kkmrkkblmbrbkC-LL
9AADCF8D2CCA5EE6
2017-10-05Gordon SpenceNF
no factor from 2^66 to 2^67
2016-10-24mikrNF-PM1
B1=2700000, B2=84000000, E=12
2016-02-23Mark RoseNF
no factor from 2^1 to 2^60
2016-02-03ramgeisNF
no factor from 2^65 to 2^66
2015-04-13VictordeHollanderNF
no factor from 2^64 to 2^65
2015-04-13VictordeHollanderNF
no factor from 2^63 to 2^64
2013-01-14dbaughNF
no factor from 2^62 to 2^63
2012-04-09Grant McCrackenNF
no factor from 2^61 to 2^62
2011-04-27James HeinrichNF-PM1
B1=185000, B2=4625000, E=6
2011-01-20JossNF-PM1
B1=50000
2010-12-29JossNF-PM1
B1=30000
2010-12-19JossNF-PM1
B1=20000
2009-01-28Sturle SundeNF
no factor from 2^60 to 2^61