prime_number = bignumber / 2 is_prime(prime_number) # -> False prime_number = bignumber // 2 is_prime(prime_number) # -> True
prime_number = ZZ(bignumber / 2) is_prime(prime_number) # -> True I've spent a couple of days arguing with people about a number (not) being a prime. Turns out it fails silently if you're in the wrong field. I guess a fix would be to ZZ() the number first in the function is_prime. If you guys agree I can submit a patch or something (never touched at Sage's codebase and that would be a good opportunity) David -- You received this message because you are subscribed to the Google Groups "sage-devel" group. To unsubscribe from this group and stop receiving emails from it, send an email to sage-devel+unsubscr...@googlegroups.com. To post to this group, send email to sage-devel@googlegroups.com. Visit this group at https://groups.google.com/group/sage-devel. For more options, visit https://groups.google.com/d/optout.
