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

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Exponent Range:










MnStatusDetails
2373967Factored
FactorDigitsBitsDate
35729013361313396864572271.62021-01-07 05:17:25
ECM
DigitsB1Curves
2550000110 / 280
Estimated T-Level: 22.0 ⓘ
TF below 2^68 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShift
Verified (Factored)Robert R. CovelliEDBCF4B81B2E23DD0
Verified (Factored)1999-03-26Alan LundEDBCF4B81B2E23DD623099
Verified (Factored)2018-05-14kkmrkkblmbrbkEDBCF4B81B2E23DD1079593
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2021-01-07mrh0E9F316BEB222BE91215295053
Verified2021-01-07Lisander Viaene0E9F316BEB222BE9167528853
History
DateUserTypeResult
2021-01-07Ryan UsherCERT
PRP Certification
Proof certified good
2021-01-07Lisander ViaeneC-PRP
M2373967/3572901336131339686457 : 0E9F316BEB222BE9
PRP proof power = 7
PRP: Verified
Proof certified good
2021-01-07Ben DeloCERT
PRP Certification
Proof certified good
2021-01-07mrhC-PRP
M2373967/3572901336131339686457 : 0E9F316BEB222BE9
PRP proof power = 7
PRP: Verified
Proof certified good
2021-01-07Chang Chia-TcheF-ECM
Factor: 3572901336131339686457 / (ECM curve 1, B1=50000, B2=5000000, Sigma=2574067571601136)
2019-04-01TJAOINF
no factor from 2^67 to 2^68
2018-05-14kkmrkkblmbrbkC-LL
EDBCF4B81B2E23DD
2018-02-09Sid & AndyNF-PM1
B1=6000000, B2=180000000, E=12
2017-06-16Gordon SpenceNF
no factor from 2^66 to 2^67
2016-02-23Mark RoseNF
no factor from 2^59 to 2^60
2015-10-31ramgeisNF
no factor from 2^65 to 2^66
2015-03-09VictordeHollanderNF
no factor from 2^64 to 2^65
2015-03-09VictordeHollanderNF
no factor from 2^63 to 2^64
2013-12-04Jerry HallettNF
no factor from 2^62 to 2^63
2012-05-31Sebastian HornbostelNF
no factor from 2^61 to 2^62
2010-02-12BudNF-PM1
B1=500000, B2=10000000, E=12
2009-01-14Sturle SundeNF
no factor from 2^60 to 2^61