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
223697Factored
FactorDigitsBitsDate
867206172095687529672066.22008-01-08 07:03:47
ECM
DigitsB1Curves
2550000280 / 280
30250000640 / 640
351000000163 / 1566
Estimated T-Level: 30.5 ⓘ
TF below 2^96 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2017-09-22Oliver KruseBEA3A65C209A6F781013
Verified2017-10-12kkmrkkblmbrbkBEA3A65C209A6F7815909613
Verified2020-04-17Oliver KruseE3314D5F3DE30C1B111538353
Verified2024-02-03Wentao HuangE3314D5F3DE30C1B11744953
History
DateUserTypeResult
2024-02-03Naegi MakotoCERT
PRP Certification
Proof certified good
2024-02-03Wentao HuangC-PRP
M223697/86720617209568752967 : E3314D5F3DE30C1B
PRP proof power = 5
PRP: Verified
Proof certified good
2022-03-12Oliver KruseNF-PM1
B1=30000000, B2=10070832992220
2022-03-07LordJuliusNF
no factor from 2^54 to 2^55
2021-06-08Oliver KruseNF-PM1
B1=30000000, B2=3000000000
2020-04-17Oliver KruseC-PRP
M223697/86720617209568752967 : E3314D5F3DE30C1B
PRP: Verified
PRP without proof (small exponent)
2017-10-12kkmrkkblmbrbkC-PRP
M223697/86720617209568752967 : BEA3A65C209A6F78
PRP: Verified
PRP without proof (small exponent)
2017-09-22Oliver KruseC-PRP
M223697/86720617209568752967 : BEA3A65C209A6F78
PRP: Verified
PRP without proof (not generated)
2017-09-22Oliver KruseC-PRP
M223697/86720617209568752967 : BEA3A65C209A6F78
PRP without proof (not generated)
2008-01-08Team_BunduF-ECM
Factor: 86720617209568752967