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
127031
Composite, with 2 known prime factors. Cofactor is composite.
Trial Factored to 268
TF target 244
Factored
FactorDigitsBitsDate
12194977823.5old
987673646871136.52008-07-26 12:48:48
ECM
DigitsB1Curves
2550000280 / 280
30250000640 / 640
351000000346 / 1566
Estimated T-Level: 31.1 ⓘ
TF below 2^98 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusProofDateUserResidueNumber of
known factors		ShiftTypeBase
Verified
No proof (small exponent)
2017-09-22Oliver Kruse2753029EB5B42DBA2013
Verified
No proof (small exponent)
2017-10-13kkmrkkblmbrbk2753029EB5B42DBA26481913
Verified
No proof (small exponent)
2020-04-17Oliver KruseDA849F071000D0D826782853
Verified
Certified Good
2024-02-03Wentao HuangDA849F071000D0D827977353
History
DateUserTypeResult
2024-02-03Naegi MakotoCERT
Proof certified good
2024-02-03Wentao HuangC-PRPM127031/12194977/98767364687 : DA849F071000D0D8
Proof Certified Good

Proof Power: 5

2020-04-17Oliver KruseC-PRPM127031/12194977/98767364687 : DA849F071000D0D8
2017-10-13kkmrkkblmbrbkC-PRPM127031/12194977/98767364687 : 2753029EB5B42DBA
2017-09-22Oliver KruseC-PRPM127031/12194977/98767364687 : 2753029EB5B42DBA
2017-09-21Oliver KruseC-PRPM127031/12194977/98767364687 : 2753029EB5B42DBA
2017-03-26kkmrkkblmbrbkNF-PM1B1=100000000, B2=2000000000, E=12
2008-07-26J FeitsmaFFactor: 98767364687