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

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MnStatusDetails
2250637Composite, with 1 known prime factor. Cofactor is composite.
Factored
FactorDigitsBitsDate
11645451001948923621286072579.92020-04-14 10:44:46
ECM
DigitsB1Curves
2550000280 / 280
30250000190 / 640
Estimated T-Level: 26.5 ⓘ
TF below 2^83 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShift
Verified (Factored)IES R.Dieste-I.Larrosa18489F4048AFAAA70
Verified (Factored)1999-07-12Chris Raimondi18489F4048AFAAA71153492
Verified (Factored)2018-04-23kkmrkkblmbrbk18489F4048AFAAA71762564
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2020-04-16mnd9AC71B2AE742E25001164685353
Verified2020-04-27MindIsEssentialAC71B2AE742E25001194861353
History
DateUserTypeResult
2020-04-27MindIsEssentialC-PRP
M2250637/1164545100194892362128607 : AC71B2AE742E2500
PRP: Verified
PRP without proof (not generated)
2020-04-16mnd9C-PRP
M2250637/1164545100194892362128607 : AC71B2AE742E2500
PRP: Verified
PRP without proof (not generated)
2020-04-14mnd9F-ECM
Factor: 1164545100194892362128607 / (ECM curve 1, B1=50000, B2=5000000, Sigma=3415780802782165)
2019-06-27BigBrotherNF-PM1
B1=1000000, B2=20000000, E=12
2019-05-20TJAOINF
no factor from 2^67 to 2^68
2018-04-23kkmrkkblmbrbkC-LL
18489F4048AFAAA7
2017-01-05Gordon SpenceNF
no factor from 2^66 to 2^67
2016-02-23Mark RoseNF
no factor from 2^1 to 2^60
2016-02-19JossNF-PM1
B1=342144, B2=3421440, E=6
2015-10-27ramgeisNF
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
2014-09-02JossNF-PM1
B1=128518
2013-01-23dbaughNF
no factor from 2^62 to 2^63
2012-05-04Sebastian HornbostelNF
no factor from 2^61 to 2^62
2011-01-06markrNF-PM1
B1=100000, B2=2075000, E=6
2010-11-11JossNF-PM1
B1=30000
2010-11-06JossNF-PM1
B1=15000
2009-01-11Sturle SundeNF
no factor from 2^60 to 2^61