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
7243Composite, with 1 known prime factor. Cofactor is composite.
Factored
FactorDigitsBitsDate
6163711519999179794109193912789.0old
ECM
DigitsB1Curves
2550000280 / 280
30250000640 / 640
3510000001566 / 1566
4030000004588 / 4588
45110000002050 / 9201
Estimated T-Level: 41.1
TF below 2^132 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2017-09-21Oliver Kruse2AF375B1F2BBDFF21013
Verified2017-10-12kkmrkkblmbrbk2AF375B1F2BBDFF21684413
Verified2020-04-17Oliver KruseB751C21E78DA7BD81706453
Verified2024-02-03Wentao HuangB751C21E78DA7BD81355953
History
DateUserTypeResult
2024-02-03Wentao HuangC-PRP
M7243/616371151999917979410919391 : B751C21E78DA7BD8
PRP: Verified
PRP without proof (small exponent)
2023-08-27-Anonymous-NF-PM1
B1=33000000000, B2=136594664543487150
2021-12-16Lisander ViaeneNF-PM1
B1=100000000
2020-04-17Oliver KruseC-PRP
M7243/616371151999917979410919391 : B751C21E78DA7BD8
PRP: Verified
PRP without proof (small exponent)
2017-10-12kkmrkkblmbrbkC-PRP
M7243/616371151999917979410919391 : 2AF375B1F2BBDFF2
PRP: Verified
PRP without proof (not generated)
2017-09-21Oliver KruseC-PRP
M7243/616371151999917979410919391 : 2AF375B1F2BBDFF2
PRP: Verified
PRP without proof (not generated)
2017-09-21Oliver KruseC-PRP
M7243/616371151999917979410919391 : 2AF375B1F2BBDFF2
PRP without proof (not generated)