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Marin Mersenne 2^P-1
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MnStatusDetails
487211Composite, with 1 known prime factor. Cofactor is composite.
Factored
FactorDigitsBitsDate
1008464637421999090312166.52008-09-22 22:45:40
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 Slowinski1DB20
Verified (Factored)Brian J. Beesley59608D77D5F79DB20
Verified (Factored)Edo de Roo Jankovic59608D77D5F79DB20
Verified (Factored)Eivind Triel59608D77D5F79DB2169835
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2017-09-26Oliver KruseC931F18CCA5652BB1013
Verified2017-09-27Oliver KruseC931F18CCA5652BB1013
Verified2017-11-09kkmrkkblmbrbkC931F18CCA5652BB123187013
Verified2020-04-18Oliver Kruse049435F13FFEAC4D137459253
Verified2024-11-27kkmrkkblmbrbk049435F13FFEAC4D133916853
History
DateUserTypeResult
2024-11-28techn1ciaNCERT
PRP Certification
Proof certified good
2024-11-27kkmrkkblmbrbkC-PRP
M487211/100846463742199909031 : 049435F13FFEAC4D
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
M487211/100846463742199909031 : 049435F13FFEAC4D
PRP: Verified
PRP without proof (small exponent)
2017-11-09kkmrkkblmbrbkC-PRP
M487211/100846463742199909031 : C931F18CCA5652BB
PRP: Verified
PRP without proof (small exponent)
2017-09-27Oliver KruseC-PRP
M487211/100846463742199909031 : C931F18CCA5652BB
PRP: Verified
PRP without proof (not generated)
2017-09-26Oliver KruseC-PRP
M487211/100846463742199909031 : C931F18CCA5652BB
PRP: Verified
PRP without proof (not generated)
2008-09-22Sturle SundeF-ECM
Factor: 100846463742199909031