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
2612843
Composite, with 1 known prime factor. Cofactor is composite.
Trial Factored to 268
TF target 263
Factored
FactorDigitsBitsDate
10712656311030.0old
ECM
DigitsB1Curves
2550000111 / 280
Estimated T-Level: 22.0
TF below 2^68 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 Kruse70CE38FA08BFCAF61175141753
Verified
PRP without proof (not generated)
2017-12-02storm551070CE38FA08BFCAF61256545953
History
DateUserTypeResult
2019-07-04alpertronNF-PM1B1=2000000, B2=60000000, E=12
2017-12-02storm5510C-PRPM2612843/1071265631 : 70CE38FA08BFCAF6
2017-10-18Oliver KruseC-PRPM2612843/1071265631 : 70CE38FA08BFCAF6