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

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Exponent Range:










MnStatusDetails
4129493Factored
FactorDigitsBitsDate
50941585227637600912755832582.12023-02-26 00:39:12
ECM
DigitsB1Curves
255000049 / 280
Estimated T-Level: 20.9 ⓘ
TF below 2^64 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShift
Verified (Factored)Gary HansonBCF64FA2FAFBCC140
Verified (Factored)1999-10-15Sean MathiasBCF64FA2FAFBCC142515259
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2023-03-03rucio72F73FB0CCE685841240757753
History
DateUserTypeResult
2023-03-03Thomas van LeeuwenCERT
PRP Certification
Proof certified good
2023-03-03rucioC-PRP
M4129493/5094158522763760091275583 : 72F73FB0CCE68584
PRP proof power = 7
PRP: Verified
Proof certified good
2023-02-26Sergey NosovF-ECM
Factor: 5094158522763760091275583 / (ECM curve 23, B1=50000, B2=5000000)
2022-04-30mikrNF
no factor from 2^70 to 2^71
2021-07-07axnNF-PM1
B1=13000000, B2=650000000
2021-06-06axnNF
no factor from 2^69 to 2^70
2021-06-06axnNF
no factor from 2^68 to 2^69
2020-11-26Carlos PinhoNF-PM1
B1=152000, B2=3980000, E=6
2018-11-19YxinityNF
no factor from 2^67 to 2^68
2017-12-14YxinityNF
no factor from 2^66 to 2^67
2016-02-23Mark RoseNF
no factor from 2^62 to 2^63
2015-06-01snme2pm1NF
no factor from 2^65 to 2^66
2013-10-28David CampeauNF
no factor from 2^64 to 2^65
2013-09-14JayderNF
no factor from 2^63 to 2^64
2013-06-29Squeeky_SquirrelNF-PM1
B1=125000, B2=2343750, E=6
2011-08-05USAFSSNF-PM1
B1=40000, B2=580000
2011-07-01GrunwalderGIMPNF
no factor from 2^1 to 2^63
2010-12-10Grant McCrackenNF
no factor from 2^61 to 2^62
2009-07-30Carsten KossendeyNF-PM1
B1=25000, B2=325000