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
208589Factored
FactorDigitsBitsDate
733762231705117360679969692685.92007-08-14 08:40:04
ECM
DigitsB1Curves
2550000280 / 280
30250000570 / 640
Estimated T-Level: 29.5
TF below 2^93 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2017-09-22Oliver Kruse00CA1F7F0F21A1BF1013
Verified2017-10-12kkmrkkblmbrbk00CA1F7F0F21A1BF15376513
Verified2020-04-17Oliver KruseE9A3B0AF5F25AEB8110351553
Verified2023-08-03USAFSSE9A3B0AF5F25AEB8120645953
History
DateUserTypeResult
2023-08-03curtiscCERT
PRP Certification
Proof certified good
2023-08-03USAFSSC-PRP
M208589/73376223170511736067996969 : E9A3B0AF5F25AEB8
PRP proof power = 5
PRP: Verified
Proof certified good
2022-03-07LordJuliusNF
no factor from 2^54 to 2^55
2022-02-14Oliver KruseNF-PM1
B1=30000000, B2=10070832992220
2021-05-11Oliver KruseNF-PM1
B1=30000000, B2=3000000000
2020-04-17Oliver KruseC-PRP
M208589/73376223170511736067996969 : E9A3B0AF5F25AEB8
PRP: Verified
PRP without proof (small exponent)
2017-10-12kkmrkkblmbrbkC-PRP
M208589/73376223170511736067996969 : 00CA1F7F0F21A1BF
PRP: Verified
PRP without proof (small exponent)
2017-09-22Oliver KruseC-PRP
M208589/73376223170511736067996969 : 00CA1F7F0F21A1BF
PRP: Verified
PRP without proof (not generated)
2017-09-22Oliver KruseC-PRP
M208589/73376223170511736067996969 : 00CA1F7F0F21A1BF
PRP without proof (not generated)
2007-08-14Team_BunduF-ECM
Factor: 73376223170511736067996969