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
8941
Composite, with 1 known prime factor. Cofactor is composite.
Trial Factored to 268
TF target 244
Factored
FactorDigitsBitsDate
754728228471136.1old
ECM
DigitsB1Curves
2550000280 / 280
30250000640 / 640
3510000001566 / 1566
4030000004588 / 4588
45110000009201 / 9201
50440000008240 / 16550
Estimated T-Level: 47.5
TF below 2^153 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 Kruse3ADD2176185FBF191013
Verified
No proof (small exponent)
2017-10-12kkmrkkblmbrbk3ADD2176185FBF191812013
Verified
No proof (small exponent)
2020-04-17Oliver Kruse430E4F239F8CF0D11608253
Verified
No proof (small exponent)
2024-07-01kkmrkkblmbrbk430E4F239F8CF0D11446353
History
DateUserTypeResult
2025-04-24masserNF-PP1Start=149/59, B1=1000000000, B2=999000000000
2024-07-01kkmrkkblmbrbkC-PRPM8941/75472822847 : 430E4F239F8CF0D1
2023-07-31JacobZNF-PM1B1=65000000000, B2=251099672798124150
2021-12-16ANONYMOUSNF-PM1B1=100000000
2020-04-17Oliver KruseC-PRPM8941/75472822847 : 430E4F239F8CF0D1
2017-10-12kkmrkkblmbrbkC-PRPM8941/75472822847 : 3ADD2176185FBF19
2017-09-21Oliver KruseC-PRPM8941/75472822847 : 3ADD2176185FBF19
2017-09-21Oliver KruseC-PRPM8941/75472822847 : 3ADD2176185FBF19