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

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MnStatusDetails
2344571Factored
FactorDigitsBitsDate
51235863915655410635728972582.12020-08-10 14:15:26
ECM
DigitsB1Curves
255000082 / 280
Estimated T-Level: 21.5 ⓘ
TF below 2^66 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShift
Verified (Factored)Chris GoodC28C3CC424805D8E0
Verified (Factored)1999-04-13Andy DaviesC28C3CC424805D8E1373136
Verified (Factored)2018-05-08kkmrkkblmbrbkC28C3CC424805D8E2021498
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2020-08-10ATHCD8AD0D724D8D99B1163246053
History
DateUserTypeResult
2020-08-11George WoltmanCERT
PRP Certification
Proof certified good
2020-08-10ATHC-PRP
M2344571/5123586391565541063572897 : CD8AD0D724D8D99B
PRP proof power = 7
PRP: Verified
Proof certified good
2020-08-10rextheruntF-ECM
Factor: 5123586391565541063572897 / (ECM curve 1, B1=50000, B2=5000000)
2019-03-11TJAOINF
no factor from 2^67 to 2^68
2018-05-08kkmrkkblmbrbkC-LL
C28C3CC424805D8E
2018-02-03Sid & AndyNF-PM1
B1=6000000, B2=180000000, E=12
2017-06-10Gordon SpenceNF
no factor from 2^66 to 2^67
2016-02-23Mark RoseNF
no factor from 2^1 to 2^60
2015-10-26ramgeisNF
no factor from 2^65 to 2^66
2015-03-06VictordeHollanderNF
no factor from 2^64 to 2^65
2015-03-06VictordeHollanderNF
no factor from 2^63 to 2^64
2013-01-23dbaughNF
no factor from 2^62 to 2^63
2012-05-29Sebastian HornbostelNF
no factor from 2^61 to 2^62
2010-03-01BudNF-PM1
B1=500000, B2=10000000, E=12
2009-01-14Sturle SundeNF
no factor from 2^60 to 2^61