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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MnDetails
2636857
Composite, with 2 known prime factors. Cofactor is composite.
Trial Factored to 268
TF target 263
Factored
FactorDigitsBitsDate
79105711826.2old
79710740635724091652.82014-08-26 11:13:31
ECM
DigitsB1Curves
2550000136 / 280
Estimated T-Level: 22.4 ⓘ
TF below 2^70 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusProofDateUserResidueNumber of
known factors		ShiftTypeBase
Verified
PRP without proof (not generated)
2017-10-18Oliver Kruse2F8A404EE607E2B52123042953
Verified
PRP without proof (not generated)
2017-12-02storm55102F8A404EE607E2B5274498953
History
DateUserTypeResult
2019-07-04alpertronNF-PM1B1=2000000, B2=60000000, E=12
2017-12-02storm5510C-PRP
M2636857/79105711/7971074063572409 : 2F8A404EE607E2B5
2017-10-18Oliver KruseC-PRP
M2636857/79105711/7971074063572409 : 2F8A404EE607E2B5
2014-08-26TJAOIFFactor: 7971074063572409