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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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Exponent Range:










MnStatusDetails
484243Composite, with 1 known prime factor. Cofactor is composite.
Factored
FactorDigitsBitsDate
557847937929.1old
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 KruseE1368D6DA796722C1013
Verified2017-09-27Oliver KruseE1368D6DA796722C1013
Verified2017-11-09kkmrkkblmbrbkE1368D6DA796722C134286613
Verified2020-04-18Oliver KruseF27761CE2B0EFFBE125456653
Verified2024-11-26kkmrkkblmbrbkF27761CE2B0EFFBE132617053
History
DateUserTypeResult
2024-11-26MathEnthousiastCERT
PRP Certification
Proof certified good
2024-11-26kkmrkkblmbrbkC-PRP
M484243/557847937 : F27761CE2B0EFFBE
PRP proof power = 6
PRP: Verified
Proof certified good
2024-08-22cramsey87NF-PM1
B1=7000000, B2=42834594660
2020-04-18Oliver KruseC-PRP
M484243/557847937 : F27761CE2B0EFFBE
PRP: Verified
PRP without proof (small exponent)
2017-11-09kkmrkkblmbrbkC-PRP
M484243/557847937 : E1368D6DA796722C
PRP: Verified
PRP without proof (small exponent)
2017-09-27Oliver KruseC-PRP
M484243/557847937 : E1368D6DA796722C
PRP: Verified
PRP without proof (not generated)
2017-09-26Oliver KruseC-PRP
M484243/557847937 : E1368D6DA796722C
PRP: Verified
PRP without proof (not generated)