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
2487673
Composite, with 1 known prime factor. Cofactor is composite.
Trial Factored to 268
TF target 263
Factored
FactorDigitsBitsDate
174137111927.4old
ECM
DigitsB1Curves
2550000139 / 280
Estimated T-Level: 22.5
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)
2017-10-14Oliver Kruse4A726342F820D8601171744053
Verified
PRP without proof (not generated)
2017-11-29storm55104A726342F820D8601111810553
History
DateUserTypeResult
2022-08-19USAFSSNF-PM1B1=224000, B2=203668920
2017-11-29storm5510C-PRPM2487673/174137111 : 4A726342F820D860
2017-10-14Oliver KruseC-PRPM2487673/174137111 : 4A726342F820D860