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
2295131
Composite, with 2 known prime factors. Cofactor is composite.
Trial Factored to 268
TF target 262
Factored
FactorDigitsBitsDate
128527337926.9old
195994685557671444.22008-09-30 14:36:47
ECM
DigitsB1Curves
2550000280 / 280
30250000120 / 640
Estimated T-Level: 25.9 ⓘ
TF below 2^81 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusProofDateUserResidueNumber of
known factors		ShiftTypeBase
Verified
PRP without proof (not generated)
2017-10-11Oliver KruseEE5262D17813DFC22013
Verified
PRP without proof (not generated)
2017-11-22storm5510EE5262D17813DFC22108563713
History
DateUserTypeResult
2017-11-22storm5510C-PRPM2295131/128527337/19599468555767 : EE5262D17813DFC2
2017-10-11Oliver KruseC-PRPM2295131/128527337/19599468555767 : EE5262D17813DFC2
2016-04-26alpertronNF-PM1B1=500000, B2=15000000, E=12
2008-09-30markrFFactor: 19599468555767