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:










MnStatusDetails
43969Composite, with 1 known prime factor. Cofactor is composite.
Factored
FactorDigitsBitsDate
70564968731032.7old
ECM
DigitsB1Curves
2550000280 / 280
30250000640 / 640
3510000001566 / 1566
403000000704 / 4588
Estimated T-Level: 35.8
TF below 2^114 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2017-09-21Oliver KruseBCAF743E0FBF33661013
Verified2017-09-21Oliver KruseBCAF743E0FBF33661013
Verified2017-11-06kkmrkkblmbrbkBCAF743E0FBF336613742813
Verified2020-04-17Oliver KruseF72265FB14768B1E12454853
Verified2024-07-01kkmrkkblmbrbkF72265FB14768B1E11840453
History
DateUserTypeResult
2024-07-01kkmrkkblmbrbkC-PRP
M43969/7056496873 : F72265FB14768B1E
PRP: Verified
PRP without proof (small exponent)
2023-04-18JacobZNF-PM1
B1=820000000, B2=1012781191031610
2021-06-29ATHNF-PP1
Start=2/7, B1=100000000, B2=10000000000
2020-04-17Oliver KruseC-PRP
M43969/7056496873 : F72265FB14768B1E
PRP: Verified
PRP without proof (small exponent)
2017-11-06kkmrkkblmbrbkC-PRP
M43969/7056496873 : BCAF743E0FBF3366
PRP: Verified
PRP without proof (small exponent)
2017-09-21Oliver KruseC-PRP
M43969/7056496873 : BCAF743E0FBF3366
PRP: Verified
PRP without proof (not generated)
2017-09-21Oliver KruseC-PRP
M43969/7056496873 : BCAF743E0FBF3366
PRP: Verified
PRP without proof (not generated)
2017-09-21Oliver KruseC-PRP
M43969/7056496873 : BCAF743E0FBF3366
PRP without proof (not generated)
2016-09-19kkmrkkblmbrbkNF-PM1
B1=100000000, B2=2000000000, E=12