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Old 2005-04-19, 15:11   #1
wblipp
 
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"William"
May 2003
New Haven

93916 Posts
Default Guidelines for ECM Before Other Methods

I have seen guidelines that say that before using GNFS, you should do ECM to 1/3 of the digits. And before doing SNFS, you should do ECM to 2/9 of the digits. For smaller numbers MPQS is better, but I haven't seen any guidelines for how much ECM to do first.

Do people generally agree on the first two guidelines, and what do people recommend for QS?
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