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
10391
Composite, with 4 known prime factors. Cofactor is composite.
Trial Factored to 268
TF target 244
Factored
FactorDigitsBitsDate
19389607824.2old
83493797490311342.92008-08-26 19:58:31
572989080613517773406896040608032901737122.12016-10-31 07:07:56
6460773225142147211862568611391993185719941135.62019-05-08 05:15:01
P-1 factors
DateFactorsB1B2
2016-10-315729890806135177734068960406080329017
10000000000505851529607770
ECM
DigitsB1Curves
2550000280 / 280
30250000640 / 640
3510000001566 / 1566
4030000004588 / 4588
45110000009201 / 9201
50440000003287 / 16550
Estimated T-Level: 46.0 ⓘ
TF below 2^148 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 Kruse09354203DC94F80C3013
Factored
No proof (small exponent)
2017-10-02kkmrkkblmbrbk09354203DC94F80C3013
Factored
No proof (small exponent)
2017-10-12kkmrkkblmbrbk09354203DC94F80C374213
Verified
No proof (small exponent)
2019-05-08ATH287073FA4872C36C4182753
Verified
No proof (small exponent)
2019-05-08ANONYMOUS287073FA4872C36C4548753
Verified
No proof (small exponent)
2019-05-09kkmrkkblmbrbk287073FA4872C36C4791253
History
DateUserTypeResult
2025-02-26masserNF-PP1Start=199/37, B1=640000000, B2=639360000000
2025-02-19masserNF-PP1Start=6/5, B1=640000000, B2=639360000000
2025-01-29masserNF-PP1Start=2/7, B1=640000000, B2=639360000000
2022-04-02-anonymous-NF-PM1B1=100000000000, B2=121968084023145360
2019-05-09kkmrkkblmbrbkC-PRPM10391/19389607/8349379749031/5729890806135177734068960406080329017/64607732251421472118625686113919931857199 : 287073FA4872C36C
2019-05-08ANONYMOUSC-PRPM10391/19389607/8349379749031/5729890806135177734068960406080329017/64607732251421472118625686113919931857199 : 287073FA4872C36C
2019-05-08ATHC-PRPM10391/19389607/8349379749031/5729890806135177734068960406080329017/64607732251421472118625686113919931857199 : 287073FA4872C36C
2019-05-08James HintzF-ECMFactor: 64607732251421472118625686113919931857199
2017-10-12kkmrkkblmbrbkC-PRPM10391/19389607/8349379749031/5729890806135177734068960406080329017 : 09354203DC94F80C
2017-10-02kkmrkkblmbrbkC-PRPM10391/19389607/8349379749031/5729890806135177734068960406080329017 : 09354203DC94F80C
2017-09-21Oliver KruseC-PRPM10391/19389607/8349379749031/5729890806135177734068960406080329017 : 09354203DC94F80C
2017-09-21Oliver KruseC-PRPM10391/19389607/8349379749031/5729890806135177734068960406080329017 : 09354203DC94F80C
2016-10-31kkmrkkblmbrbkF-PM1Factor: 5729890806135177734068960406080329017 / B1=10000000000, B2=505851529607770
2016-09-07kkmrkkblmbrbkNF-PM1B1=100000000, B2=10000000000, E=12
2008-08-26-anonymous-FFactor: 8349379749031