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Old 2021-06-10, 12:33   #45
charybdis
 
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Apr 2020

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Quote:
Originally Posted by bur View Post
I entered the poly parameters into myfactor, but it came up with a different skew (3.3e6 instead of 2.6e6) than the one I used for the factorization and the scores were on the order of 10^-12 instead of 10^7. I found this surprising, is the score calculated that differently or were the myfactor skews so bad? How can I calculate scores by using msieve?
The Murphy-E score reported by CADO is not the same as that reported by msieve and cownoise.com. Technically the CADO one is closer to Murphy's definition of E, but it depends on the I value, qmin and the lpb bounds, so it shouldn't be used for comparing polynomials for two different numbers unless they used the same parameters. Msieve's E-score does not depend on the parameters and so can be used to compare polynomials for different numbers, as long as they have the same degree.
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