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
2295971
Composite, with 3 known prime factors. Cofactor is composite.
Trial Factored to 268
TF target 262
Factored
FactorDigitsBitsDate
128574377926.9old
50781818387952580943512272.12022-10-20 21:19:28
224512677701972064984492374.22023-06-03 05:45:10
ECM
DigitsB1Curves
2550000280 / 280
30250000124 / 640
Estimated T-Level: 26.0
TF below 2^81 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusProofDateUserResidueNumber of
known factors
ShiftTypeBase
Factored
PRP without proof (not generated)
2017-10-11Oliver Kruse71085073947917E51013
Factored
PRP without proof (not generated)
2017-11-22storm551071085073947917E51139542013
Factored
Certified Good
2022-10-20Kevin_9611302410EDE2DDF45F275629453
Verified
Certified Good
2023-06-03JacobZ302410EDE2DDF45F3137214753
History
DateUserTypeResult
2023-06-03curtiscCERT
Proof certified good
2023-06-03JacobZC-PRPM2295971/128574377/5078181838795258094351/22451267770197206498449 : 302410EDE2DDF45F
Proof Certified Good

Proof Power: 7

2023-06-03JacobZF-ECMFactor: 22451267770197206498449 / ECM curve 22, B1=50000, B2=45033450, Montgomery Sigma=4773579721246326
2022-10-20iwesCERT
Proof certified good
2022-10-20Kevin_9611C-PRPM2295971/128574377/5078181838795258094351 : 302410EDE2DDF45F
Proof Certified Good

Proof Power: 7

2022-10-20NesowaF-ECMFactor: 5078181838795258094351 / ECM curve 7, B1=50000, B2=27023535, Montgomery Sigma=113305051388848
2017-11-22storm5510C-PRPM2295971/128574377 : 71085073947917E5
2017-10-11Oliver KruseC-PRPM2295971/128574377 : 71085073947917E5
2016-04-27alpertronNF-PM1B1=500000, B2=15000000, E=12