Marin Mersenne 2^P-1
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Great Internet Mersenne Prime Search
GIMPS
Finding World Record Primes Since 1996

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MnStatusDetails
2245979Factored
FactorDigitsBitsDate
4155304109515230709912168.52020-04-30 09:31:09
ECM
DigitsB1Curves
255000065 / 280
Estimated T-Level: 21.2 ⓘ
TF below 2^65 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShift
BadAlex and Nick MyrmanE2690
Verified (Factored)nphanDCF3FFDDF595E2680
Verified (Factored)2002-06-09S57483DCF3FFDDF595E268467350
Verified (Factored)2002-06-23Mikus GrinbergsDCF3FFDDF595E268228959
Verified (Factored)2016-05-06kkmrkkblmbrbkDCF3FFDDF595E2681294531
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2020-04-30M MillerA4B269239DF46768188321753
Verified2020-05-01marssystemsA4B269239DF46768116596853
History
DateUserTypeResult
2020-05-01marssystemsC-PRP
M2245979/415530410951523070991 : A4B269239DF46768
PRP: Verified
PRP without proof (not generated)
2020-04-30M MillerC-PRP
M2245979/415530410951523070991 : A4B269239DF46768
PRP: Verified
PRP without proof (not generated)
2020-04-30mnd9F-ECM
Factor: 415530410951523070991 / (ECM curve 2, B1=50000, B2=5000000, Sigma=4524630660660220)
2019-04-01TJAOINF
no factor from 2^67 to 2^68
2017-01-05Gordon SpenceNF
no factor from 2^66 to 2^67
2016-05-06kkmrkkblmbrbkC-LL
DCF3FFDDF595E268
2016-02-23Mark RoseNF
no factor from 2^1 to 2^60
2015-12-05Alexander DubrovinNF-PM1
B1=1000000, B2=10000000, E=12
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
2013-12-04LaurVNF
no factor from 2^62 to 2^63
2012-05-03Sebastian HornbostelNF
no factor from 2^61 to 2^62
2012-01-07Squeeky_SquirrelNF-PM1
B1=150000, B2=3262500, E=6
2011-01-18JossNF-PM1
B1=50000
2009-01-11Sturle SundeNF
no factor from 2^60 to 2^61