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
7577Composite, with 1 known prime factor. Cofactor is composite.
Factored
FactorDigitsBitsDate
7571266273740052091859.4old
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 KruseA78D8E764256EFF91013
Verified2017-10-12kkmrkkblmbrbkA78D8E764256EFF91532613
Verified2020-04-17Oliver KruseA0E984063FB9DBAA1159453
Verified2024-02-03Wentao HuangA0E984063FB9DBAA1600453
History
DateUserTypeResult
2024-12-09yuriy5-1NF-PM1
B1=24000000000, B2=94499985857637360
2024-02-03Wentao HuangC-PRP
M7577/757126627374005209 : A0E984063FB9DBAA
PRP: Verified
PRP without proof (small exponent)
2021-07-07ViliamFNF-PM1
B1=1000000000, B2=201000000000
2020-04-17Oliver KruseC-PRP
M7577/757126627374005209 : A0E984063FB9DBAA
PRP: Verified
PRP without proof (small exponent)
2017-10-12kkmrkkblmbrbkC-PRP
M7577/757126627374005209 : A78D8E764256EFF9
PRP: Verified
PRP without proof (not generated)
2017-09-21Oliver KruseC-PRP
M7577/757126627374005209 : A78D8E764256EFF9
PRP: Verified
PRP without proof (not generated)
2017-09-21Oliver KruseC-PRP
M7577/757126627374005209 : A78D8E764256EFF9
PRP without proof (not generated)