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

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MnStatusDetails
2232653Factored
FactorDigitsBitsDate
9596091489981686398480012479.72015-11-26 09:47:45
ECM
DigitsB1Curves
2550000102 / 280
Estimated T-Level: 21.8 ⓘ
TF below 2^67 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShift
Verified (Factored)1998-03-09Jamie Foster73D3ED82AACA051B0
Verified (Factored)1999-02-07David Phillips73D3ED82AACA051B562949
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2017-09-30alpertron2E52146726B93BD31013
Verified2017-10-28Oliver Kruse2E52146726B93BD31178495113
P-1 factors
DateFactorB1B2
2015-11-26959609148998168639848001130000011000000
History
DateUserTypeResult
2022-03-09LordJuliusNF
no factor from 2^1 to 2^60
2017-10-28Oliver KruseC-PRP
M2232653/959609148998168639848001 : 2E52146726B93BD3
PRP: Verified
PRP without proof (not generated)
2017-09-30alpertronC-PRP
M2232653/959609148998168639848001 : 2E52146726B93BD3
PRP: Verified
PRP without proof (not generated)
2016-04-13alpertronNF-PM1
B1=500000, B2=15000000, E=12
2015-11-26Alexander DubrovinF-PM1
Factor: 959609148998168639848001 / (P-1, B1=1300000, B2=11000000, E=12)
2015-10-25ramgeisNF
no factor from 2^65 to 2^66
2015-03-10VictordeHollanderNF
no factor from 2^64 to 2^65
2015-03-10VictordeHollanderNF
no factor from 2^63 to 2^64
2014-09-30JossNF-PM1
B1=142496
2014-05-26JossNF-PM1
B1=113748
2013-12-03LaurVNF
no factor from 2^62 to 2^63
2012-04-20Sebastian HornbostelNF
no factor from 2^61 to 2^62
2011-01-13Oscar ÖstlinNF-PM1
B1=85000, B2=1615000, E=6
2010-10-26Oscar ÖstlinNF-PM1
B1=75011
2009-01-11Sturle SundeNF
no factor from 2^60 to 2^61