Marin Mersenne 2^P-1
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MnStatusDetails
494237Composite, with 1 known prime factor. Cofactor is composite.
Factored
FactorDigitsBitsDate
5129728630936914203123772478.82009-09-11 15:37:38
ECM
DigitsB1Curves
2550000280 / 280
30250000200 / 640
Estimated T-Level: 26.6
TF below 2^83 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShift
Verified (Factored)David Slowinski38B20
Verified (Factored)Mischa KennD98CF09D16B5F8B20
Verified (Factored)Brian J. BeesleyD98CF09D16B5F8B20
Verified (Factored)Eivind TrielD98CF09D16B5F8B2210416
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2017-09-27Oliver Kruse3AF3E0C0AB056EC81013
Verified2017-09-27Oliver Kruse3AF3E0C0AB056EC81013
Verified2017-11-09kkmrkkblmbrbk3AF3E0C0AB056EC8137860413
Verified2020-04-18Oliver KruseDA1B365D47A83BF918161253
Verified2024-12-01kkmrkkblmbrbkDA1B365D47A83BF9131091853
History
DateUserTypeResult
2024-12-01techn1ciaNCERT
PRP Certification
Proof certified good
2024-12-01kkmrkkblmbrbkC-PRP
M494237/512972863093691420312377 : DA1B365D47A83BF9
PRP proof power = 6
PRP: Verified
Proof certified good
2022-03-07LordJuliusNF
no factor from 2^54 to 2^55
2020-04-18Oliver KruseC-PRP
M494237/512972863093691420312377 : DA1B365D47A83BF9
PRP: Verified
PRP without proof (small exponent)
2017-11-09kkmrkkblmbrbkC-PRP
M494237/512972863093691420312377 : 3AF3E0C0AB056EC8
PRP: Verified
PRP without proof (small exponent)
2017-09-27Oliver KruseC-PRP
M494237/512972863093691420312377 : 3AF3E0C0AB056EC8
PRP: Verified
PRP without proof (not generated)
2017-09-27Oliver KruseC-PRP
M494237/512972863093691420312377 : 3AF3E0C0AB056EC8
PRP: Verified
PRP without proof (not generated)
2009-09-11Sturle SundeF-ECM
Factor: 512972863093691420312377