[Python-ideas] Add the imath module

[Jeroen Demeyer]

On 2018-07-13 14:26, Steven D'Aprano wrote:
> I'm pretty sure that Sage is using numpy

This computation uses PARI/GP, a dedicated library for number theory 
(https://pari.math.u-bordeaux.fr/) with a Python interface 
(https://github.com/defeo/cypari2).

> And it's
> probably making far less conservative choices about the rate of false
> positives it is willing to accept.

It's an actual primality test, not a probable primality test. But for 
numbers which are not prime (like your examples), the difference doesn't 
actually matter.