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
5087603
Composite, with 2 known prime factors. Cofactor is composite.
Trial Factored to 270
TF target 265
Factored
FactorDigitsBitsDate
407008241928.6old
9741010118328311549.82014-05-14 11:18:46
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)
2017-09-20kkmrkkblmbrbkD8485E53D33F5AAF2013
Verified
PRP without proof (not generated)
2018-05-02storm5510D8485E53D33F5AAF2505706813
History
DateUserTypeResult
2025-01-22Sid & AndyNFno factor TF: 68-70
2025-01-20Sid & AndyNF-PM1B1=3600000, B2=9023744730
2023-05-11This -Anonymous-NF-PM1B1=50000, B2=1000000
2018-05-02storm5510C-PRPM5087603/407008241/974101011832831 : D8485E53D33F5AAF
2017-09-20kkmrkkblmbrbkC-PRPM5087603/407008241/974101011832831 : D8485E53D33F5AAF
2014-05-14TJAOIFFactor: 974101011832831