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
194197Composite, with 1 known prime factor. Cofactor is composite.
Factored
FactorDigitsBitsDate
1165183720.2old
ECM
DigitsB1Curves
2550000280 / 280
30250000640 / 640
351000000224 / 1566
Estimated T-Level: 30.7
TF below 2^97 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2017-09-22Oliver KruseA0E7B1A6853F76DD1013
Verified2017-10-12kkmrkkblmbrbkA0E7B1A6853F76DD117618413
Verified2020-04-17Oliver KruseC702092FB36C6AC7116245253
Verified2023-08-24USAFSSC702092FB36C6AC7118791053
History
DateUserTypeResult
2023-08-24curtiscCERT
PRP Certification
Proof certified good
2023-08-24USAFSSC-PRP
M194197/1165183 : C702092FB36C6AC7
PRP proof power = 5
PRP: Verified
Proof certified good
2021-07-12ATHNF-PP1
Start=2/7, B1=15000000, B2=1500000000
2020-04-17Oliver KruseC-PRP
M194197/1165183 : C702092FB36C6AC7
PRP: Verified
PRP without proof (small exponent)
2017-10-12kkmrkkblmbrbkC-PRP
M194197/1165183 : A0E7B1A6853F76DD
PRP: Verified
PRP without proof (small exponent)
2017-09-22Oliver KruseC-PRP
M194197/1165183 : A0E7B1A6853F76DD
PRP: Verified
PRP without proof (not generated)
2017-09-22Oliver KruseC-PRP
M194197/1165183 : A0E7B1A6853F76DD
PRP without proof (not generated)
2017-09-02kkmrkkblmbrbkNF-PM1
B1=100000000, B2=2000000000, E=12