Hi,
A few people reported "ERROR: Factor does not divide N!" errors
during P-1 or ECM factoring. The bug has been located and fixed in
version 20.5.
The bug occurs when the memory settings change in the
middle of a GCD. This includes the change that can occur at day/night
transitions.
Obviously, you are not required to upgrade as this error is pretty
rare....
Regards,
George
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