I saw something similar once, out of hundreds of ECM curves
that I've run.
It happened on the curve being run while I adjusted memory limits
on the program (Version 20.4.1, April 25 file date), if I recall correctly.
Ken
At 03:42 PM 5/25/2000 EDT, you wrote:
>I just got this in an ECM run on M(10079). What does it mean? Is something
>wrong with my machine?
>
>[Thu May 25 15:00:24 2000]
>ECM found a factor in curve #263, stage #2
>Sigma=1155032128984, B1=250000, B2=25000000.
>ERROR: Factor doesn't divide N!
>
>Nathan
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