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

PrimeNet Exponent Status

Exponent Range:










MnStatusDetails
784661Composite, with 1 known prime factor. Cofactor is composite.
Factored
FactorDigitsBitsDate
119268473926.8old
ECM
DigitsB1Curves
2550000280 / 280
30250000100 / 640
Estimated T-Level: 25.8
TF below 2^81 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2017-09-28Oliver KruseC0EF57AD48B3B3C61013
Verified2017-10-13Oliver KruseC0EF57AD48B3B3C61256113
Verified2017-12-18ATHC0EF57AD48B3B3C6130663613
Verified2020-04-21Oliver KruseAF2BF18E22D34F9D176699653
Verified2025-04-16kkmrkkblmbrbkAF2BF18E22D34F9D134720253
History
DateUserTypeResult
2025-04-16CorranCERT
PRP Certification
Proof certified good
2025-04-16kkmrkkblmbrbkC-PRP
M784661/119268473 : AF2BF18E22D34F9D
PRP proof power = 6
PRP: Verified
Proof certified good
2024-09-24timc995NF-PM1
B1=1000000, B2=50255955750
2020-04-21Oliver KruseC-PRP
M784661/119268473 : AF2BF18E22D34F9D
PRP: Verified
PRP without proof (small exponent)
2017-12-18ATHC-PRP
M784661/119268473 : C0EF57AD48B3B3C6
PRP: Verified
PRP without proof (small exponent)
2017-10-13Oliver KruseC-PRP
M784661/119268473 : C0EF57AD48B3B3C6
PRP: Verified
PRP without proof (small exponent)
2017-09-28Oliver KruseC-PRP
M784661/119268473 : C0EF57AD48B3B3C6
PRP: Verified
PRP without proof (not generated)