Marin Mersenne 2^P-1
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Great Internet Mersenne Prime Search
GIMPS
Finding World Record Primes Since 1996

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Exponent Range:










MnStatusDetails
13835923Factored
FactorDigitsBitsDate
1192544881967473643044375529213096.62022-07-02 14:08:10
ECM
DigitsB1Curves
25500001 / 280
Estimated T-Level: 20.0 ⓘ
TF below 2^61 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShift
Verified (Factored)2002-03-31Steve SpicerFB4EBE93D44AC16611166820
Verified (Factored)2005-05-12Hubbell-primeFB4EBE93D44AC1666306133
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2022-10-19Funky Waddle5F90C46EDBE83998140023553
P-1 factors
DateFactorB1B2
2022-07-02119254488196747364304437552921762000376693590
History
DateUserTypeResult
2022-10-19daveward2005CERT
PRP Certification
Proof certified good
2022-10-19Funky WaddleC-PRP
M13835923/119254488196747364304437552921 : 5F90C46EDBE83998
PRP proof power = 8
PRP: Verified
Proof certified good
2022-07-02James HeinrichF-PM1
Factor: 119254488196747364304437552921 / (P-1, B1=762000, B2=376693590)
2021-10-22-Anonymous-NF
no factor from 2^71 to 2^72
2021-09-04SRBaseNF
no factor from 2^70 to 2^71
2021-08-08SRBaseNF
no factor from 2^69 to 2^70
2018-01-14ramgeisNF
no factor from 2^68 to 2^69
2017-12-23-Anonymous-NF
no factor from 2^67 to 2^68
2015-08-30NesowaNF
no factor from 2^66 to 2^67
2014-07-08NesowaNF
no factor from 2^65 to 2^66