Marin Mersenne 2^P-1
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GIMPS
Finding World Record Primes Since 1996

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MnDetails
2349271
Composite, with 1 known prime factor. Cofactor is composite.
Trial Factored to 268
TF target 262
Factored
FactorDigitsBitsDate
12128198366556171650.1old
ECM
DigitsB1Curves
2550000223 / 280
Estimated T-Level: 24.0
TF below 2^75 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusProofDateUserResidueNumber of
known factors
ShiftTypeBase
Verified
PRP without proof (not generated)
2017-10-12Oliver Kruse0459A3ABE0D7643E1013
Verified
PRP without proof (not generated)
2017-11-24storm55100459A3ABE0D7643E152159713
History
DateUserTypeResult
2018-03-18alpertronNF-PM1B1=500000, B2=15000000, E=12
2017-11-24storm5510C-PRPM2349271/1212819836655617 : 0459A3ABE0D7643E
2017-10-12Oliver KruseC-PRPM2349271/1212819836655617 : 0459A3ABE0D7643E