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
10223Composite, with 2 known prime factors. Cofactor is composite.
Factored
FactorDigitsBitsDate
18467031671030.8old
216388842389734331754.32008-08-26 19:58:30
ECM
DigitsB1Curves
2550000280 / 280
30250000640 / 640
3510000001566 / 1566
4030000004588 / 4588
45110000001378 / 9201
Estimated T-Level: 40.7
TF below 2^130 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2017-09-21Oliver Kruse76574674B5229ABC2013
Verified2017-10-12kkmrkkblmbrbk76574674B5229ABC2734913
Verified2020-04-17Oliver Kruse928B373483B795202326453
Verified2024-07-01kkmrkkblmbrbk928B373483B795202268753
History
DateUserTypeResult
2024-07-01kkmrkkblmbrbkC-PRP
M10223/1846703167/21638884238973433 : 928B373483B79520
PRP: Verified
PRP without proof (small exponent)
2022-10-10-Anonymous-NF-PM1
B1=100000000000, B2=121570702234581600
2021-08-01ViliamFNF-PM1
B1=250000000, B2=40250000000
2020-04-17Oliver KruseC-PRP
M10223/1846703167/21638884238973433 : 928B373483B79520
PRP: Verified
PRP without proof (small exponent)
2017-10-12kkmrkkblmbrbkC-PRP
M10223/1846703167/21638884238973433 : 76574674B5229ABC
PRP: Verified
PRP without proof (not generated)
2017-09-21Oliver KruseC-PRP
M10223/1846703167/21638884238973433 : 76574674B5229ABC
PRP: Verified
PRP without proof (not generated)
2017-09-21Oliver KruseC-PRP
M10223/1846703167/21638884238973433 : 76574674B5229ABC
PRP without proof (not generated)
2016-09-07kkmrkkblmbrbkNF-PM1
B1=100000000, B2=10000000000, E=12
2008-08-26-Anonymous-F-PM1
Factor: 21638884238973433