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Old 2021-07-22, 09:40   #403
Brownfox
 
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Dec 2017

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What rules of thumb are people using to decide how much ECM to do before embarking on NFS?


For instance, the last composite for (6,10) is a c177 for GNFS, or a c209 for SNFS Quartic. I've done ECM up to 50 digits (7556 curves at B1=43E6). Is this sufficient or would you expect some curves at 55 digit level?
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