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
12041
Composite, with 2 known prime factors. Cofactor is composite.
Trial Factored to 268
TF target 244
Factored
FactorDigitsBitsDate
1806151720.8old
3760296268059931003104499906073098.22009-07-30 22:58:16
ECM
DigitsB1Curves
2550000280 / 280
30250000640 / 640
3510000001566 / 1566
4030000004588 / 4588
45110000003158 / 9201
Estimated T-Level: 41.7 ⓘ
TF below 2^134 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 KruseDD891996B444DF832013
Verified
No proof (small exponent)
2017-10-12kkmrkkblmbrbkDD891996B444DF832538113
Verified
No proof (small exponent)
2020-04-17Oliver Kruse3F6B825B3110F57E2514453
Verified
No proof (small exponent)
2023-05-19-anonymous-3F6B825B3110F57E2874953
History
DateUserTypeResult
2025-03-09masserNF-PP1Start=137/41, B1=430000000, B2=429570000000
2025-02-27masserNF-PP1Start=6/5, B1=430000000, B2=429570000000
2025-01-21masserNF-PP1Start=2/7, B1=430000000, B2=429570000000
2023-05-19-anonymous-C-PRPM12041/1806151/376029626805993100310449990607 : 3F6B825B3110F57E
2023-04-06-anonymous-NF-PM1B1=100000000000, B2=122192573512709700
2020-04-17Oliver KruseC-PRPM12041/1806151/376029626805993100310449990607 : 3F6B825B3110F57E
2017-10-12kkmrkkblmbrbkC-PRPM12041/1806151/376029626805993100310449990607 : DD891996B444DF83
2017-09-21Oliver KruseC-PRPM12041/1806151/376029626805993100310449990607 : DD891996B444DF83
2017-09-21Oliver KruseC-PRPM12041/1806151/376029626805993100310449990607 : DD891996B444DF83
2016-09-08kkmrkkblmbrbkNF-PM1B1=100000000, B2=10000000000, E=12
2009-07-30Matthias WurtingerF-ECMFactor: 376029626805993100310449990607