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
2600951
Composite, with 3 known prime factors. Cofactor is composite.
Trial Factored to 268
TF target 263
Factored
FactorDigitsBitsDate
22940387831031.1old
963652345511136.52008-07-14 20:25:18
392469200669511445.22008-09-30 14:37:16
ECM
DigitsB1Curves
2550000126 / 280
Estimated T-Level: 22.3
TF below 2^69 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusProofDateUserResidueNumber of
known factors
ShiftTypeBase
Verified
PRP without proof (not generated)
2017-10-15Oliver Kruse9A11A33FFCE384C63203671453
Verified
PRP without proof (not generated)
2017-12-02storm55109A11A33FFCE384C63234606853
History
DateUserTypeResult
2019-07-04alpertronNF-PM1B1=2000000, B2=60000000, E=12
2017-12-02storm5510C-PRPM2600951/2294038783/96365234551/39246920066951 : 9A11A33FFCE384C6
2017-10-15Oliver KruseC-PRPM2600951/2294038783/96365234551/39246920066951 : 9A11A33FFCE384C6
2008-09-30markrFFactor: 39246920066951
2008-07-14George WoltmanF-ECMFactor: 96365234551