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

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MnStatusDetails
2591587Factored
FactorDigitsBitsDate
5176854198670613883119532478.82014-06-19 14:40:31
ECM
DigitsB1Curves
255000011 / 280
Estimated T-Level: 20.2
TF below 2^62 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShift
Verified (Factored)Jerry McKean1299AF7A7E4527A80
Verified (Factored)1999-04-13Hans Kesting1299AF7A7E4527A8963526
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2017-10-15Oliver Kruse2736A5126B960777125629153
Verified2017-12-02storm55102736A5126B960777134407653
History
DateUserTypeResult
2023-01-28USAFSSNF-PM1
B1=360000, B2=322217280
2022-03-11LordJuliusNF
no factor from 2^1 to 2^60
2017-12-02storm5510C-PRP
M2591587/517685419867061388311953 : 2736A5126B960777
PRP: Verified
PRP without proof (not generated)
2017-10-15Oliver KruseC-PRP
M2591587/517685419867061388311953 : 2736A5126B960777
PRP: Verified
PRP without proof (not generated)
2014-06-19KAMCOBILLF-ECM
Factor: 517685419867061388311953
2013-01-14dbaughNF
no factor from 2^62 to 2^63
2012-06-22Sebastian HornbostelNF
no factor from 2^61 to 2^62
2011-02-22James HeinrichNF-PM1
B1=300000, B2=8000000, E=12
2011-01-13JossNF-PM1
B1=50000
2010-11-15JossNF-PM1
B1=20000
2009-01-28Sturle SundeNF
no factor from 2^60 to 2^61