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:





MnDetails
10223
Composite, with 2 known prime factors. Cofactor is composite.
Trial Factored to 268
TF target 244
Factored
FactorDigitsBitsDate
18467031671030.8old
216388842389734331754.32008-08-26 19:58:30
ECM
DigitsB1Curves
2550000280 / 280
30250000640 / 640
3510000001566 / 1566
4030000004588 / 4588
45110000009201 / 9201
50440000003311 / 16550
Estimated T-Level: 46.0 ⓘ
TF below 2^148 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusProofDateUserResidueNumber of
known factors		ShiftTypeBase
Verified
No proof (small exponent)
2017-09-21Oliver Kruse76574674B5229ABC2013
Verified
No proof (small exponent)
2017-10-12kkmrkkblmbrbk76574674B5229ABC2734913
Verified
No proof (small exponent)
2020-04-17Oliver Kruse928B373483B795202326453
Verified
No proof (small exponent)
2024-07-01kkmrkkblmbrbk928B373483B795202268753
History
DateUserTypeResult
2025-02-26masserNF-PP1Start=142/11, B1=640000000, B2=639360000000
2025-02-20masserNF-PP1Start=6/5, B1=640000000, B2=639360000000
2025-01-30masserNF-PP1Start=2/7, B1=640000000, B2=639360000000
2024-07-01kkmrkkblmbrbkC-PRPM10223/1846703167/21638884238973433 : 928B373483B79520
2022-10-10-anonymous-NF-PM1B1=100000000000, B2=121570702234581600
2021-08-01ViliamFNF-PM1B1=250000000, B2=40250000000
2020-04-17Oliver KruseC-PRPM10223/1846703167/21638884238973433 : 928B373483B79520
2017-10-12kkmrkkblmbrbkC-PRPM10223/1846703167/21638884238973433 : 76574674B5229ABC
2017-09-21Oliver KruseC-PRPM10223/1846703167/21638884238973433 : 76574674B5229ABC
2017-09-21Oliver KruseC-PRPM10223/1846703167/21638884238973433 : 76574674B5229ABC
2016-09-07kkmrkkblmbrbkNF-PM1B1=100000000, B2=10000000000, E=12
2008-08-26-anonymous-F-PM1Factor: 21638884238973433