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

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MnStatusDetails
2326081Composite, with 1 known prime factor. Cofactor is composite.
Factored
FactorDigitsBitsDate
23717779120008435334092271.02017-12-09 09:42:45
ECM
DigitsB1Curves
2550000183 / 280
Estimated T-Level: 23.3 ⓘ
TF below 2^72 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShift
Verified (Factored)Jim Hunt5DEA922CAF1EF4090
Verified (Factored)1999-03-01chris clark5DEA922CAF1EF409343597
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2017-12-10Yaroslav BerezhkoF4BC696B4E8BC17617759553
Verified2017-12-10Yaroslav BerezhkoF4BC696B4E8BC1761196601853
Verified2017-12-11Oliver KruseF4BC696B4E8BC1761122750653
P-1 factors
DateFactorB1B2
2017-12-0923717779120008435334096000000180000000
History
DateUserTypeResult
2018-03-05alpertronNF-PM1
B1=500000, B2=15000000, E=12
2017-12-11Oliver KruseC-PRP
M2326081/2371777912000843533409 : F4BC696B4E8BC176
PRP: Verified
PRP without proof (not generated)
2017-12-10Yaroslav BerezhkoC-PRP
M2326081/2371777912000843533409 : F4BC696B4E8BC176
PRP: Verified
PRP without proof (not generated)
2017-12-10Yaroslav BerezhkoC-PRP
M2326081/2371777912000843533409 : F4BC696B4E8BC176
PRP: Verified
PRP without proof (not generated)
2017-12-09Sid & AndyF-PM1
Factor: 2371777912000843533409 / (P-1, B1=6000000, B2=180000000, E=12)
2017-06-03Gordon SpenceNF
no factor from 2^66 to 2^67
2016-02-23Mark RoseNF
no factor from 2^1 to 2^60
2015-10-25ramgeisNF
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
2013-12-06Jerry HallettNF
no factor from 2^62 to 2^63
2012-05-26Sebastian HornbostelNF
no factor from 2^61 to 2^62
2010-02-24BudNF-PM1
B1=500000, B2=10000000, E=12
2009-01-17Sturle SundeNF
no factor from 2^60 to 2^61