Marin Mersenne 2^P-1
Username
Password
Forgot password?
Blue
Great Internet Mersenne Prime Search
GIMPS
Finding World Record Primes Since 1996

PrimeNet Exponent Status

Exponent Range:










MnStatusDetails
42437Composite, with 2 known prime factors. Cofactor is composite.
Factored
FactorDigitsBitsDate
26735311824.7old
1854597900071237.42008-08-26 20:00:41
ECM
DigitsB1Curves
2550000280 / 280
30250000640 / 640
3510000001566 / 1566
403000000742 / 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 Kruse09ECA4DF02A669DE2013
Verified2017-10-13kkmrkkblmbrbk09ECA4DF02A669DE2449513
Verified2020-04-17Oliver Kruse5936E28F8E3840AC24059153
Verified2024-07-01kkmrkkblmbrbk5936E28F8E3840AC2796753
History
DateUserTypeResult
2024-12-16masserNF-PP1
Start=106/19, B1=60000000, B2=59940000000
2024-12-12masserNF-PP1
Start=6/5, B1=60000000, B2=59940000000
2024-11-29masserNF-PP1
Start=2/7, B1=60000000, B2=59940000000
2024-07-01kkmrkkblmbrbkC-PRP
M42437/185459790007/26735311 : 5936E28F8E3840AC
PRP: Verified
PRP without proof (small exponent)
2023-04-14JacobZNF-PM1
B1=850000000, B2=618707738528880
2020-04-17Oliver KruseC-PRP
M42437/26735311/185459790007 : 5936E28F8E3840AC
PRP: Verified
PRP without proof (small exponent)
2017-10-13kkmrkkblmbrbkC-PRP
M42437/26735311/185459790007 : 09ECA4DF02A669DE
PRP: Verified
PRP without proof (not generated)
2017-09-21Oliver KruseC-PRP
M42437/26735311/185459790007 : 09ECA4DF02A669DE
PRP: Verified
PRP without proof (not generated)
2017-09-21Oliver KruseC-PRP
M42437/26735311/185459790007 : 09ECA4DF02A669DE
PRP without proof (not generated)
2016-09-19kkmrkkblmbrbkNF-PM1
B1=100000000, B2=2000000000, E=12
2008-08-26-Anonymous-F
Factor: 185459790007