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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Exponent Range:





MnDetails
10385117
Composite, with 2 known prime factors. Cofactor is composite.
Trial Factored to 268
TF target 268
Factored
FactorDigitsBitsDate
50679370971032.2old
4020676010628356455132168.42020-05-21 14:42:57
P-1 factors
DateFactorsB1B2
2020-05-21402067601062835645513
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)
2020-05-21riccardo ubertiC62D9EC772AFF911198536553
Verified
PRP without proof (not generated)
2020-05-23Luigi MorelliC62D9EC772AFF9112285979853
History
DateUserTypeResult
2021-05-30riccardo ubertiNF-PP1Start=2/7, B1=750000, B2=20000000
2021-05-19riccardo ubertiNF-PP1Start=6/5, B1=750000, B2=20000000
2020-05-23Luigi MorelliC-PRPM10385117/5067937097/402067601062835645513 : C62D9EC772AFF911
2020-05-21riccardo ubertiF-PM1Factor: 402067601062835645513 / B1=500000, B2=10000000
2020-05-21riccardo ubertiC-PRPM10385117/5067937097 : C62D9EC772AFF911