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

PrimeNet Exponent Status

Exponent Range:










MnStatusDetails
254993Composite, with 1 known prime factor. Cofactor is composite.
Factored
FactorDigitsBitsDate
493242302843531445.5old
ECM
DigitsB1Curves
2550000280 / 280
30250000607 / 640
Estimated T-Level: 29.7
TF below 2^94 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2017-09-22Oliver KruseE745860302998E1D1013
Verified2017-09-22Oliver KruseE745860302998E1D1013
Verified2017-11-06kkmrkkblmbrbkE745860302998E1D17571813
Verified2020-04-17Oliver KruseFD7E5A0807004AF7113817253
Verified2024-02-03Wentao HuangFD7E5A0807004AF7119201353
History
DateUserTypeResult
2024-02-03Naegi MakotoCERT
PRP Certification
Proof certified good
2024-02-03Wentao HuangC-PRP
M254993/49324230284353 : FD7E5A0807004AF7
PRP proof power = 5
PRP: Verified
Proof certified good
2022-04-25Oliver KruseNF-PM1
B1=30000000, B2=10173695171640
2021-09-01Oliver KruseNF-PM1
B1=30000000, B2=3000000000, E=24
2020-04-17Oliver KruseC-PRP
M254993/49324230284353 : FD7E5A0807004AF7
PRP: Verified
PRP without proof (small exponent)
2017-11-06kkmrkkblmbrbkC-PRP
M254993/49324230284353 : E745860302998E1D
PRP: Verified
PRP without proof (small exponent)
2017-09-22Oliver KruseC-PRP
M254993/49324230284353 : E745860302998E1D
PRP: Verified
PRP without proof (not generated)
2017-09-22Oliver KruseC-PRP
M254993/49324230284353 : E745860302998E1D
PRP: Verified
PRP without proof (not generated)
2017-09-22Oliver KruseC-PRP
M254993/49324230284353 : E745860302998E1D
PRP without proof (not generated)