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
202219Composite, with 2 known prime factors. Cofactor is composite.
Factored
FactorDigitsBitsDate
2022191720.9old
60714232571032.52008-07-21 09:13:45
ECM
DigitsB1Curves
2550000280 / 280
30250000640 / 640
351000000248 / 1566
Estimated T-Level: 30.8
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 Kruse28C9BD1FCC2E0A592013
Verified2017-10-12kkmrkkblmbrbk28C9BD1FCC2E0A5929632213
Verified2020-04-17Oliver Kruse7C5AF87C4C41D35D24095753
Verified2023-08-03USAFSS7C5AF87C4C41D35D25480453
History
DateUserTypeResult
2023-08-03curtiscCERT
PRP Certification
Proof certified good
2023-08-03USAFSSC-PRP
M202219/2022191/6071423257 : 7C5AF87C4C41D35D
PRP proof power = 5
PRP: Verified
Proof certified good
2022-02-04Oliver KruseNF-PM1
B1=30000000, B2=10264076402580
2021-05-05Oliver KruseNF-PM1
B1=30000000, B2=3000000000
2020-04-17Oliver KruseC-PRP
M202219/2022191/6071423257 : 7C5AF87C4C41D35D
PRP: Verified
PRP without proof (small exponent)
2017-10-12kkmrkkblmbrbkC-PRP
M202219/2022191/6071423257 : 28C9BD1FCC2E0A59
PRP: Verified
PRP without proof (small exponent)
2017-09-22Oliver KruseC-PRP
M202219/2022191/6071423257 : 28C9BD1FCC2E0A59
PRP: Verified
PRP without proof (not generated)
2017-09-22Oliver KruseC-PRP
M202219/2022191/6071423257 : 28C9BD1FCC2E0A59
PRP without proof (not generated)
2008-07-21J FeitsmaF
Factor: 6071423257