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
2630923
Composite, with 1 known prime factor. Cofactor is composite.
Trial Factored to 268
TF target 263
Factored
FactorDigitsBitsDate
266430204628571444.6old
ECM
DigitsB1Curves
2550000159 / 280
Estimated T-Level: 22.8
TF below 2^71 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusProofDateUserResidueNumber of
known factors
ShiftTypeBase
Verified
PRP without proof (not generated)
2017-10-17Oliver Kruse11675C7DA81772DB1237106353
Verified
PRP without proof (not generated)
2017-12-02storm551011675C7DA81772DB118012753
History
DateUserTypeResult
2019-07-04alpertronNF-PM1B1=2000000, B2=60000000, E=12
2017-12-02storm5510C-PRP
M2630923/26643020462857 : 11675C7DA81772DB
2017-10-17Oliver KruseC-PRP
M2630923/26643020462857 : 11675C7DA81772DB