Marin Mersenne 2^P-1
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Great Internet Mersenne Prime Search
GIMPS
Finding World Record Primes Since 1996

PrimeNet Exponent Status

Exponent Range:





MnStatusDetails
11959Composite, with 5 known prime factors. Cofactor is composite.
Factored
FactorDigitsBitsDate
119591616.9old
46675346760711342.12008-08-26 19:58:35
378077336916314905878173124996424934111.52022-02-16 18:24:01
53145257853236149319876304525722677736118.72019-03-22 17:18:34
4250378230641397039677469675827352163938125.02025-08-21 03:43:37
TF
Trial Factored to 268
TF target 244
P-1 factors
DateFactorsB1B2
2023-04-06No new factors discovered100000000000122192573512709696
ECM
DigitsB1Curves
2550000280 / 280
30250000640 / 640
3510000001566 / 1566
4030000004588 / 4588
45110000002161 / 9201
Estimated T-Level: 41.2 ⓘ
TF below 2^132 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusProofDateUserResidueNumber of
known factors		ShiftTypeBase
Factored
No proof (small exponent)
2017-09-21Oliver Kruse4F9CDDB87E8C15282013
Factored
No proof (small exponent)
2017-10-12kkmrkkblmbrbk4F9CDDB87E8C15282731513
Factored
No proof (small exponent)
2019-03-23ANONYMOUS6AB2FB89F05396B33842753
Factored
No proof (small exponent)
2019-03-24_p95holder_6AB2FB89F05396B33933653
Factored
No proof (small exponent)
2022-02-17mnd96AB2FB89F05396B341132353
Verified
No proof (small exponent)
2025-08-21USAFSS6AB2FB89F05396B35144953
History
DateUserTypeResult
2025-08-21USAFSSC-PRPM11959/119591/4667534676071/3780773369163149058781731249964249/531452578532361493198763045257226777/42503782306413970396774696758273521639 : 6AB2FB89F05396B3
2025-08-21USAFSSF-ECMFactor: 42503782306413970396774696758273521639 / ECM curve 71, B1=11000000, B2=893922664635, Edwards Sigma=6726325640391583
2023-04-06-anonymous-F-PM1Factor: 3780773369163149058781731249964249 / B1=100000000000, B2=122192573512709700
2022-07-17masserNF-PM1B1=500000000, B2=290938964916600
2022-07-16masserNF-PP1Start=137/23, B1=200000000, B2=16200000000
2022-07-16masserNF-PP1Start=6/5, B1=100000000, B2=5000000000
2022-07-16masserNF-PP1Start=6/5, B1=40000000, B2=1640000000
2022-07-16masserNF-PP1Start=2/7, B1=20000000, B2=820000000
2022-02-17mnd9C-PRPM11959/119591/4667534676071/3780773369163149058781731249964249/531452578532361493198763045257226777 : 6AB2FB89F05396B3
2022-02-16James HintzF-ECMFactor: 3780773369163149058781731249964249 / ECM curve 108, B1=3000000, B2=300000000, Montgomery Sigma=2858006014911333
2019-03-24_p95holder_C-PRPM11959/119591/4667534676071/531452578532361493198763045257226777 : 6AB2FB89F05396B3
2019-03-23ANONYMOUSC-PRPM11959/119591/4667534676071/531452578532361493198763045257226777 : 6AB2FB89F05396B3
2019-03-22Niels_Mache_NextcloudF-ECMFactor: 531452578532361493198763045257226777
2017-10-12kkmrkkblmbrbkC-PRPM11959/119591/4667534676071 : 4F9CDDB87E8C1528
2017-09-21Oliver KruseC-PRPM11959/119591/4667534676071 : 4F9CDDB87E8C1528
2017-09-21Oliver KruseC-PRPM11959/119591/4667534676071 : 4F9CDDB87E8C1528
2016-09-07kkmrkkblmbrbkNF-PM1B1=100000000, B2=10000000000, E=12
2008-08-26-anonymous-FFactor: 4667534676071