Marin Mersenne 2^P-1
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GIMPS
Finding World Record Primes Since 1996

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Exponent Range:










MnStatusDetails
446909Composite, with 3 known prime factors. Cofactor is composite.
Factored
FactorDigitsBitsDate
6256727722.6old
3040366617911238.12008-07-21 09:19:29
24953396407691341.22008-07-21 09:19:28
ECM
DigitsB1Curves
2550000280 / 280
30250000350 / 640
Estimated T-Level: 27.7
TF below 2^87 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2017-09-24Oliver Kruse5547DE13595AA10D3013
Verified2017-09-24Oliver Kruse5547DE13595AA10D3013
Verified2017-11-09kkmrkkblmbrbk5547DE13595AA10D320509213
Verified2020-04-18Oliver KruseD619B8E89893FF80332917753
Verified2024-11-07kkmrkkblmbrbkD619B8E89893FF8037636853
History
DateUserTypeResult
2024-11-07wigglefruitCERT
PRP Certification
Proof certified good
2024-11-07kkmrkkblmbrbkC-PRP
M446909/6256727/304036661791/2495339640769 : D619B8E89893FF80
PRP proof power = 6
PRP: Verified
Proof certified good
2020-04-18Oliver KruseC-PRP
M446909/6256727/304036661791/2495339640769 : D619B8E89893FF80
PRP: Verified
PRP without proof (small exponent)
2017-11-09kkmrkkblmbrbkC-PRP
M446909/6256727/304036661791/2495339640769 : 5547DE13595AA10D
PRP: Verified
PRP without proof (small exponent)
2017-09-24Oliver KruseC-PRP
M446909/6256727/2495339640769/304036661791 : 5547DE13595AA10D
PRP: Verified
PRP without proof (not generated)
2017-09-24Oliver KruseC-PRP
M446909/6256727/2495339640769/304036661791 : 5547DE13595AA10D
PRP: Verified
PRP without proof (not generated)
2016-03-17alpertronNF-PM1
B1=3000000, B2=100000000, E=12
2008-07-21J FeitsmaF
Factor: 304036661791
2008-07-21J FeitsmaF
Factor: 2495339640769