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
13421Composite, with 1 known prime factor. Cofactor is composite.
Factored
FactorDigitsBitsDate
1143695532152869659039541306333096.5old
ECM
DigitsB1Curves
2550000280 / 280
30250000640 / 640
3510000001566 / 1566
4030000004588 / 4588
45110000001380 / 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 Kruse29B642F76BB1CEE41013
Verified2017-10-12kkmrkkblmbrbk29B642F76BB1CEE41760013
Verified2020-04-17Oliver Kruse87BFC9441B0C26D9130753
Verified2024-07-01kkmrkkblmbrbk87BFC9441B0C26D911264853
History
DateUserTypeResult
2024-07-01kkmrkkblmbrbkC-PRP
M13421/114369553215286965903954130633 : 87BFC9441B0C26D9
PRP: Verified
PRP without proof (small exponent)
2023-12-19-Anonymous-NF-PM1
B1=100000000000, B2=122154521813133810
2023-05-19JacobZNF-PM1
B1=8200000000, B2=35024272926292650
2022-02-05JossNF-PM1
B1=1000000, B2=3910366209750
2020-04-17Oliver KruseC-PRP
M13421/114369553215286965903954130633 : 87BFC9441B0C26D9
PRP: Verified
PRP without proof (small exponent)
2017-10-12kkmrkkblmbrbkC-PRP
M13421/114369553215286965903954130633 : 29B642F76BB1CEE4
PRP: Verified
PRP without proof (not generated)
2017-09-21Oliver KruseC-PRP
M13421/114369553215286965903954130633 : 29B642F76BB1CEE4
PRP: Verified
PRP without proof (not generated)
2017-09-21Oliver KruseC-PRP
M13421/114369553215286965903954130633 : 29B642F76BB1CEE4
PRP without proof (not generated)