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

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MnStatusDetails
324437Factored
FactorDigitsBitsDate
2658314219941455823604722349613732104.42019-03-18 09:45:06
ECM
DigitsB1Curves
2550000280 / 280
30250000374 / 640
Estimated T-Level: 27.9 ⓘ
TF below 2^88 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShift
Verified (Factored)David Slowinski776F0
Verified (Factored)Unknown776F0
Verified (Factored)Guillermo Ballester ValorF1C68EEC78E6F76F0
Verified (Factored)Eivind TrielF1C68EEC78E6F76F214174
Verified (Factored)2002-01-15Dennis PopeF1C68EEC78E6F76F199312
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2019-03-18ATH051B54211F2D9241122101453
Verified2019-03-19Chang Chia-Tche051B54211F2D9241114490653
History
DateUserTypeResult
2022-03-07LordJuliusNF
no factor from 2^54 to 2^55
2019-03-19Chang Chia-TcheC-PRP
M324437/26583142199414558236047223496137 : 051B54211F2D9241
PRP: Verified
PRP without proof (small exponent)
2019-03-18ATHC-PRP
M324437/26583142199414558236047223496137 : 051B54211F2D9241
PRP: Verified
PRP without proof (small exponent)
2019-03-18alexF-ECM
Factor: 26583142199414558236047223496137 / (ECM curve 185, B1=250000, B2=25000000, Sigma=1360645890819203)
2018-01-27Gordon SpenceNF
no factor from 2^64 to 2^65
2016-07-08mikrNF-PM1
B1=60000000, B2=3000000000, E=12
2015-12-11Gordon SpenceNF
no factor from 2^63 to 2^64
2015-12-11Gordon SpenceNF
no factor from 2^62 to 2^63
2015-07-22NRNF
no factor from 2^61 to 2^62
2013-03-06Sid & AndyNF
no factor from 2^60 to 2^61
2012-01-13alpertronNF-PM1
B1=10000000, B2=200000000, E=12
2011-08-06JossNF-PM1
B1=1429875
2009-01-24Sturle SundeNF
no factor from 2^59 to 2^60
2008-12-30Sturle SundeNF
no factor from 2^58 to 2^59