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:





MnDetails
5085299
Composite, with 2 known prime factors. Cofactor is composite.
Trial Factored to 270
TF target 265
Factored
FactorDigitsBitsDate
586847674545191445.7old
1428846666706071547.02008-09-30 21:43:35
ECM
DigitsB1Curves
25500003 / 280
Estimated T-Level: 20.1
TF below 2^62 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusProofDateUserResidueNumber of
known factors
ShiftTypeBase
Verified
PRP without proof (not generated)
2017-09-20kkmrkkblmbrbkE4941747BAB944072013
Verified
PRP without proof (not generated)
2018-05-02storm5510E4941747BAB944072385833913
History
DateUserTypeResult
2025-01-21Sid & AndyNFno factor TF: 68-70
2025-01-15Sid & AndyNF-PM1B1=3600000, B2=9211762560
2023-05-11This -Anonymous-NF-PM1B1=50000, B2=1000000
2018-05-02storm5510C-PRPM5085299/58684767454519/142884666670607 : E4941747BAB94407
2017-09-20kkmrkkblmbrbkC-PRPM5085299/142884666670607/58684767454519 : E4941747BAB94407
2008-09-30markrFFactor: 142884666670607