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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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MnStatusDetails
486223Composite, with 1 known prime factor. Cofactor is composite.
Factored
FactorDigitsBitsDate
117377177388862075320492373.3old
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.
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2017-09-26Oliver KruseB8BF7124B972CFE61013
Verified2017-09-27Oliver KruseB8BF7124B972CFE61013
Verified2017-11-09kkmrkkblmbrbkB8BF7124B972CFE6116166413
Verified2020-04-18Oliver Kruse338A5FEDC654DB12123620553
Verified2024-11-27kkmrkkblmbrbk338A5FEDC654DB1218424053
History
DateUserTypeResult
2024-11-27ky0urakuCERT
PRP Certification
Proof certified good
2024-11-27kkmrkkblmbrbkC-PRP
M486223/11737717738886207532049 : 338A5FEDC654DB12
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
M486223/11737717738886207532049 : 338A5FEDC654DB12
PRP: Verified
PRP without proof (small exponent)
2017-11-09kkmrkkblmbrbkC-PRP
M486223/11737717738886207532049 : B8BF7124B972CFE6
PRP: Verified
PRP without proof (small exponent)
2017-09-27Oliver KruseC-PRP
M486223/11737717738886207532049 : B8BF7124B972CFE6
PRP: Verified
PRP without proof (not generated)
2017-09-26Oliver KruseC-PRP
M486223/11737717738886207532049 : B8BF7124B972CFE6
PRP: Verified
PRP without proof (not generated)