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
10396753
Composite, with 2 known prime factors. Cofactor is composite.
Trial Factored to 268
TF target 268
Factored
FactorDigitsBitsDate
111258624343193044792063.3old
2542473709717705401465912477.82020-06-02 03:39:04
P-1 factors
DateFactorsB1B2
2020-06-02254247370971770540146591
50000010000000
ECM
DigitsB1Curves
255000032 / 280
Estimated T-Level: 20.6
TF below 2^63 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusProofDateUserResidueNumber of
known factors
ShiftTypeBase
Factored
PRP without proof (not generated)
2020-06-01riccardo uberti9E78CC98C6204A531283737553
Verified
PRP without proof (not generated)
2020-06-05oodaira9E78CC98C6204A532157892653
History
DateUserTypeResult
2021-05-31riccardo ubertiNF-PP1Start=2/7, B1=750000, B2=20000000
2021-05-20riccardo ubertiNF-PP1Start=6/5, B1=750000, B2=20000000
2020-06-05oodairaC-PRPM10396753/11125862434319304479/254247370971770540146591 : 9E78CC98C6204A53
2020-06-02riccardo ubertiF-PM1Factor: 254247370971770540146591 / B1=500000, B2=10000000
2020-06-01riccardo ubertiC-PRPM10396753/11125862434319304479 : 9E78CC98C6204A53
1999-09-22MadPoo 🙂FFactor: 11125862434319304479