Marin Mersenne 2^P-1
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Great Internet Mersenne Prime Search
GIMPS
Finding World Record Primes Since 1996

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Exponent Range:





MnDetails
2266519
Composite, with 2 known prime factors. Cofactor is composite.
Trial Factored to 268
TF target 262
Factored
FactorDigitsBitsDate
23073163431031.1old
2757764328071238.02008-07-14 20:22:33
ECM
DigitsB1Curves
2550000280 / 280
30250000157 / 640
Estimated T-Level: 26.2
TF below 2^82 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusProofDateUserResidueNumber of
known factors
ShiftTypeBase
Verified
PRP without proof (not generated)
2017-10-10Oliver Kruse11CEF143E4B8BD8B2013
Verified
PRP without proof (not generated)
2017-11-21storm551011CEF143E4B8BD8B276992613
History
DateUserTypeResult
2017-11-21storm5510C-PRPM2266519/2307316343/275776432807 : 11CEF143E4B8BD8B
2017-10-10Oliver KruseC-PRPM2266519/2307316343/275776432807 : 11CEF143E4B8BD8B
2016-04-23alpertronNF-PM1B1=500000, B2=15000000, E=12
2008-07-14George WoltmanF-ECMFactor: 275776432807