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
10383953
Composite, with 2 known prime factors. Cofactor is composite.
Trial Factored to 268
TF target 268
Factored
FactorDigitsBitsDate
62303719825.9old
371862131421559705554232375.02020-05-21 20:23:30
P-1 factors
DateFactorsB1B2
2020-05-2137186213142155970555423
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)
2020-05-20riccardo ubertiD1ED0BCFED49E4A41943875853
Verified
PRP without proof (not generated)
2020-05-24ANONYMOUSD1ED0BCFED49E4A42254917753
History
DateUserTypeResult
2021-05-30riccardo ubertiNF-PP1Start=2/7, B1=750000, B2=20000000
2021-05-19riccardo ubertiNF-PP1Start=6/5, B1=750000, B2=20000000
2020-05-24ANONYMOUSC-PRPM10383953/62303719/37186213142155970555423 : D1ED0BCFED49E4A4
2020-05-21riccardo ubertiF-PM1Factor: 37186213142155970555423 / B1=500000, B2=10000000
2020-05-20riccardo ubertiC-PRPM10383953/62303719 : D1ED0BCFED49E4A4