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

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MnStatusDetails
7468793Composite, with 1 known prime factor. Cofactor is composite.
Factored
FactorDigitsBitsDate
62376103056259466274865672582.42021-10-10 06:38:46
ECM
DigitsB1Curves
25500006 / 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)2000-02-09Chris Schoon0D891CA2142EDE096004488
Verified (Factored)2002-04-14Marc Honey0D891CA2142EDE095768755
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2021-10-19kracker51F56A4C90E5EB521628959053
Verified2021-10-22LaurV51F56A4C90E5EB521619288853
P-1 factors
DateFactorB1B2
2021-10-1062376103056259466274865672000000162000000
History
DateUserTypeResult
2021-10-22David A. McGoughCERT
PRP Certification
Proof certified good
2021-10-22LaurVC-PRP
M7468793/6237610305625946627486567 : 51F56A4C90E5EB52
PRP proof power = 8
PRP: Verified
Proof certified good
2021-10-19krackerC-PRP
M7468793/6237610305625946627486567 : 51F56A4C90E5EB52
PRP: Verified
PRP without proof (not generated)
2021-10-10Architects CubedF-PM1
Factor: 6237610305625946627486567 / (P-1, B1=2000000, B2=162000000)
2021-09-28SRBaseNF
no factor from 2^71 to 2^72
2019-06-17NumberwangNF-PM1
B1=140000, B2=2415000, E=6
2016-05-22ramgeisNF
no factor from 2^70 to 2^71
2016-05-22ramgeisNF
no factor from 2^69 to 2^70
2016-05-22ramgeisNF
no factor from 2^68 to 2^69
2016-05-19america64NF
no factor from 2^67 to 2^68
2016-05-19america64NF
no factor from 2^66 to 2^67
2015-06-26VictordeHollanderNF
no factor from 2^65 to 2^66
2013-11-26David CampeauNF
no factor from 2^64 to 2^65
2013-10-24NesowaNF
no factor from 2^63 to 2^64
2012-07-07NesowaNF-PM1
B1=90000, B2=1665000, E=6