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

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MnStatusDetails
3930743Factored
FactorDigitsBitsDate
249548025080440953268312374.42011-09-30 04:05:28
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)1998-06-28Gary Untermeyer1A997ED4A9F9BEEB0
Verified (Factored)1999-12-01Kate Stange1A997ED4A9F9BEEB542887
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2017-09-20kkmrkkblmbrbk20A350C1CAF456F51013
Verified2017-12-30Chang Chia-Tche20A350C1CAF456F51148667313
History
DateUserTypeResult
2022-09-10JossNF-PM1
B1=1000000, B2=207510030
2022-06-20LordJuliusNF
no factor from 2^66 to 2^67
2022-06-20LordJuliusNF
no factor from 2^65 to 2^66
2022-06-20LordJuliusNF
no factor from 2^64 to 2^65
2022-06-20LordJuliusNF
no factor from 2^63 to 2^64
2022-06-20LordJuliusNF
no factor from 2^62 to 2^63
2022-01-27JossNF
no factor from 2^67 to 2^68
2022-01-27JossNF-PM1
B1=1000000, B2=134869350
2017-12-30Chang Chia-TcheC-PRP
M3930743/24954802508044095326831 : 20A350C1CAF456F5
PRP: Verified
PRP without proof (not generated)
2017-09-20kkmrkkblmbrbkC-PRP
M3930743/24954802508044095326831 : 20A350C1CAF456F5
PRP: Verified
PRP without proof (not generated)
2011-09-30Squeeky_SquirrelF-PM1
Factor: 24954802508044095326831
2011-03-04Grant McCrackenNF
no factor from 2^61 to 2^62
2009-07-12Carsten KossendeyNF-PM1
B1=20000, B2=285000
2009-01-04Architects CubedNF
no factor from 2^60 to 2^61