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

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MnDetails
2494381
Composite, with 3 known prime factors. Cofactor is composite.
Trial Factored to 268
TF target 263
Factored
FactorDigitsBitsDate
114741527926.8old
601046045771135.82008-07-14 20:24:20
1673180887191237.32008-07-14 20:24:20
ECM
DigitsB1Curves
2550000121 / 280
Estimated T-Level: 22.2
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)
2017-10-14Oliver KruseA50F8541CE0EC9CB360475253
Verified
PRP without proof (not generated)
2017-11-30storm5510A50F8541CE0EC9CB3109038953
History
DateUserTypeResult
2019-07-04alpertronNF-PM1B1=2000000, B2=60000000, E=12
2017-11-30storm5510C-PRPM2494381/114741527/167318088719/60104604577 : A50F8541CE0EC9CB
2017-10-14Oliver KruseC-PRPM2494381/114741527/167318088719/60104604577 : A50F8541CE0EC9CB
2008-07-14George WoltmanF-ECMFactor: 60104604577
2008-07-14George WoltmanF-ECMFactor: 167318088719