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

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Exponent Range:










MnStatusDetails
3937337Factored
FactorDigitsBitsDate
246607207589503253692064.42011-09-28 07:44:37
1521723427942601387512167.02021-07-07 15:57:02
ECM
DigitsB1Curves
25500003 / 280
Estimated T-Level: 20.1 ⓘ
TF below 2^62 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShift
Verified (Factored)1998-04-15challenge28CFABA43D5019F70
Verified (Factored)1999-12-30Daniel Hermle28CFABA43D5019F7857962
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified (Factored)2017-09-20kkmrkkblmbrbk58525AA0B4BFDF031013
Verified (Factored)2017-12-31Oliver Kruse58525AA0B4BFDF031189006413
Verified2021-07-09tottenhoff1B292BA6B998BB352169509253
History
DateUserTypeResult
2022-09-27JossNF-PM1
B1=1000000, B2=119860650
2022-07-12LordJuliusNF
no factor from 2^66 to 2^67
2022-07-12LordJuliusNF
no factor from 2^65 to 2^66
2022-07-12LordJuliusNF
no factor from 2^63 to 2^64
2022-07-12LordJuliusNF
no factor from 2^62 to 2^63
2022-07-12Wentao HuangF
Factor: 24660720758950325369 / TF: 64-65
2022-07-12Wentao HuangNF
no factor from 2^63 to 2^64
2022-07-12Wentao HuangNF
no factor from 2^62 to 2^63
2022-05-15JossNF-PM1
B1=500000, B2=119860650
2021-07-09curtiscCERT
PRP Certification
Proof certified good
2021-07-09tottenhoffC-PRP
M3937337/24660720758950325369/152172342794260138751 : 1B292BA6B998BB35
PRP proof power = 7
PRP: Verified
Proof certified good
2021-07-07TJAOIF
Factor: 152172342794260138751 / TF: 67-68
2017-12-31Oliver KruseC-PRP
M3937337/24660720758950325369 : 58525AA0B4BFDF03
PRP: Verified (Factored)
PRP without proof (not generated)
2017-09-20kkmrkkblmbrbkC-PRP
M3937337/24660720758950325369 : 58525AA0B4BFDF03
PRP: Verified (Factored)
PRP without proof (not generated)
2011-09-28Squeeky_SquirrelF-PM1
Factor: 24660720758950325369
2011-03-10Grant McCrackenNF
no factor from 2^61 to 2^62
2009-08-01Carsten KossendeyNF-PM1
B1=20000, B2=285000
2009-01-01Architects CubedNF
no factor from 2^60 to 2^61