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
14563Composite, with 1 known prime factor. Cofactor is composite.
Factored
FactorDigitsBitsDate
2513900071485286071857.8old
ECM
DigitsB1Curves
2550000280 / 280
30250000640 / 640
3510000001566 / 1566
4030000004588 / 4588
45110000001259 / 9201
Estimated T-Level: 40.7
TF below 2^130 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2017-09-21Oliver KruseC579493F8A34DD661013
Verified2017-10-12kkmrkkblmbrbkC579493F8A34DD661232413
Verified2020-04-17Oliver KruseCE5C8D3F225FD88E160953
Verified2024-07-01kkmrkkblmbrbkCE5C8D3F225FD88E1590953
P-1 factors
DateFactorB1B2
2024-02-09251390007148528607100000000000122154521813133808
History
DateUserTypeResult
2024-07-01kkmrkkblmbrbkC-PRP
M14563/251390007148528607 : CE5C8D3F225FD88E
PRP: Verified
PRP without proof (small exponent)
2024-02-09Anton RepkoF-PM1
Factor: 251390007148528607 / (P-1, B1=100000000000, B2=122154521813133810)
2023-05-25JacobZNF-PM1
B1=7500000000, B2=29520458628010350
2020-04-17Oliver KruseC-PRP
M14563/251390007148528607 : CE5C8D3F225FD88E
PRP: Verified
PRP without proof (small exponent)
2017-10-12kkmrkkblmbrbkC-PRP
M14563/251390007148528607 : C579493F8A34DD66
PRP: Verified
PRP without proof (not generated)
2017-09-21Oliver KruseC-PRP
M14563/251390007148528607 : C579493F8A34DD66
PRP: Verified
PRP without proof (not generated)
2017-09-21Oliver KruseC-PRP
M14563/251390007148528607 : C579493F8A34DD66
PRP without proof (not generated)