Marin Mersenne 2^P-1
Username
Password
Forgot password?
White
Great Internet Mersenne Prime Search
GIMPS
Finding World Record Primes Since 1996

PrimeNet Exponent Status

Exponent Range:





MnDetails
10399621
Composite, with 4 known prime factors. Cofactor is composite.
Trial Factored to 268
TF target 268
Factored
FactorDigitsBitsDate
334451811371135.0old
173291042435325117912063.92017-06-08 11:14:13
2155198060493084247612167.52022-10-25 08:26:04
202326532819119524722812374.12020-06-05 00:57:34
P-1 factors
DateFactorsB1B2
2020-06-0520232653281911952472281
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)
2020-06-02riccardo ubertiB1764DD5396D0BB22636945253
Factored
PRP without proof (not generated)
2020-06-07Luigi MorelliB1764DD5396D0BB23907316953
Verified
Certified Good
2022-10-31g0bB1764DD5396D0BB24242724653
History
DateUserTypeResult
2022-10-31Joe KCERT
Proof certified good
2022-10-31g0bC-PRPM10399621/33445181137/17329104243532511791/20232653281911952472281/215519806049308424761 : B1764DD5396D0BB2
Proof Certified Good

Proof Power: 8

2022-10-25TJAOIFFactor: 215519806049308424761
2021-05-31riccardo ubertiNF-PP1Start=2/7, B1=750000, B2=20000000
2021-05-20riccardo ubertiNF-PP1Start=6/5, B1=750000, B2=20000000
2020-06-07Luigi MorelliC-PRPM10399621/33445181137/17329104243532511791/20232653281911952472281 : B1764DD5396D0BB2
2020-06-05riccardo ubertiF-PM1Factor: 20232653281911952472281 / B1=500000, B2=10000000
2020-06-02riccardo ubertiC-PRPM10399621/33445181137/17329104243532511791 : B1764DD5396D0BB2
2017-06-08TJAOIFFactor: 17329104243532511791