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
12743
Composite, with 2 known prime factors. Cofactor is composite.
Trial Factored to 268
TF target 244
Factored
FactorDigitsBitsDate
330278072735095556348172374.8old
79075972231903234317048172582.72008-11-22 12:25:27
P-1 factors
DateFactorsB1B2
2023-05-24No new factors discovered100000000000120417199046794656
ECM
DigitsB1Curves
2550000280 / 280
30250000640 / 640
3510000001566 / 1566
4030000004588 / 4588
45110000001448 / 9201
Estimated T-Level: 40.8 ⓘ
TF below 2^130 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 KruseD65E3F7F37EE2BFD2013
Verified
No proof (small exponent)
2017-10-02kkmrkkblmbrbkD65E3F7F37EE2BFD2013
Verified
No proof (small exponent)
2017-12-07ATHD65E3F7F37EE2BFD2721213
Verified
No proof (small exponent)
2020-04-17Oliver Kruse75E31AA329010C992277653
Verified
No proof (small exponent)
2023-05-24-anonymous-75E31AA329010C9921258953
Verified
No proof (small exponent)
2023-05-24reclux75E31AA329010C992889553
History
DateUserTypeResult
2025-03-05masserNF-PP1Start=183/13, B1=430000000, B2=429570000000
2025-02-17masserNF-PP1Start=6/5, B1=430000000, B2=429570000000
2025-01-17masserNF-PP1Start=2/7, B1=430000000, B2=429570000000
2023-05-24recluxC-PRPM12743/33027807273509555634817/7907597223190323431704817 : 75E31AA329010C99
2023-05-24-anonymous-C-PRPM12743/33027807273509555634817/7907597223190323431704817 : 75E31AA329010C99
2023-05-24-anonymous-F-PM1Factor: 33027807273509555634817 / B1=100000000000, B2=120417199046794650
2023-05-14JacobZNF-PM1B1=8700000000, B2=36024966470342850
2022-02-05JossNF-PM1B1=1000000, B2=3910366209750
2020-04-17Oliver KruseC-PRPM12743/33027807273509555634817/7907597223190323431704817 : 75E31AA329010C99
2017-12-07ATHC-PRPM12743/33027807273509555634817/7907597223190323431704817 : D65E3F7F37EE2BFD
2017-10-02kkmrkkblmbrbkC-PRPM12743/33027807273509555634817/7907597223190323431704817 : D65E3F7F37EE2BFD
2017-09-21Oliver KruseC-PRPM12743/33027807273509555634817/7907597223190323431704817 : D65E3F7F37EE2BFD
2008-11-22-anonymous-F-ECMFactor: 7907597223190323431704817