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:





MnDetails
11239
Composite, with 5 known prime factors. Cofactor is composite.
Trial Factored to 268
TF target 244
Factored
FactorDigitsBitsDate
68731652467431342.6old
9757158112568331549.82008-08-26 19:58:34
485374403855574976792065.42008-08-29 02:24:27
49839832032523547632572272.12008-08-29 02:24:27
6222033467787916667931012312199555996260741135.52016-12-10 05:26:11
P-1 factors
DateFactorsB1B2
2022-12-30No new factors discovered100000000000122192573512709696
2016-12-1062220334677879166679310123121995559962607
10000000000203242774494058
ECM
DigitsB1Curves
2550000280 / 280
30250000640 / 640
3510000001566 / 1566
4030000004588 / 4588
45110000002494 / 9201
Estimated T-Level: 41.4 ⓘ
TF below 2^132 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusProofDateUserResidueNumber of
known factors		ShiftTypeBase
Verified
No proof (small exponent)
2017-09-21Oliver Kruse5E55DCD8122EB7865013
Verified
No proof (small exponent)
2017-10-02kkmrkkblmbrbk5E55DCD8122EB7865013
Verified
No proof (small exponent)
2017-12-07ATH5E55DCD8122EB78651050613
Verified
No proof (small exponent)
2020-04-17Oliver Kruse18F12461736C543C5364753
Verified
No proof (small exponent)
2024-07-01kkmrkkblmbrbk18F12461736C543C51109753
Verified
No proof (small exponent)
2025-10-06Dobri18F12461736C543C5396053
History
DateUserTypeResult
2025-10-06DobriC-PRPM11239/6873165246743/975715811256833/48537440385557497679/4983983203252354763257/62220334677879166679310123121995559962607 : 18F12461736C543C
2025-02-20masserNF-PP1Start=89/41, B1=640000000, B2=639360000000
2025-02-13masserNF-PP1Start=6/5, B1=640000000, B2=639360000000
2025-01-25masserNF-PP1Start=2/7, B1=640000000, B2=639360000000
2024-07-01kkmrkkblmbrbkC-PRPM11239/48537440385557497679/4983983203252354763257/62220334677879166679310123121995559962607/6873165246743/975715811256833 : 18F12461736C543C
2022-12-30-anonymous-F-PM1Factors: 48537440385557497679,62220334677879166679310123121995559962607 / B1=100000000000, B2=122192573512709700
2020-04-17Oliver KruseC-PRPM11239/6873165246743/975715811256833/48537440385557497679/4983983203252354763257/62220334677879166679310123121995559962607 : 18F12461736C543C
2017-12-07ATHC-PRPM11239/6873165246743/975715811256833/48537440385557497679/4983983203252354763257/62220334677879166679310123121995559962607 : 5E55DCD8122EB786
2017-10-02kkmrkkblmbrbkC-PRPM11239/6873165246743/975715811256833/48537440385557497679/4983983203252354763257/62220334677879166679310123121995559962607 : 5E55DCD8122EB786
2017-09-21Oliver KruseC-PRPM11239/6873165246743/975715811256833/48537440385557497679/4983983203252354763257/62220334677879166679310123121995559962607 : 5E55DCD8122EB786
2017-09-21Oliver KruseC-PRPM11239/6873165246743/975715811256833/48537440385557497679/4983983203252354763257/62220334677879166679310123121995559962607 : 5E55DCD8122EB786
2016-12-10kkmrkkblmbrbkF-PM1Factor: 62220334677879166679310123121995559962607 / B1=10000000000, B2=203242774494058
2016-09-07kkmrkkblmbrbkNF-PM1B1=100000000, B2=10000000000, E=12
2008-08-29-anonymous-F-ECMFactor: 4983983203252354763257
2008-08-29-anonymous-F-ECMFactor: 48537440385557497679
2008-08-26-anonymous-F-PM1Factor: 975715811256833