Cheryl Sabella added the comment: Hello, I came across this issue and was wondering if the FAQ section of the doc might be a good place to mention the presence of FFT, or actually fast number theoretic transform, as Stefan pointed out. I was also wondering if the short code snippet for the Mersenne prime might be included in the recipes as an example of what decimal is capable of? ---------- nosy: +csabella _______________________________________ Python tracker <report@bugs.python.org> <http://bugs.python.org/issue26256> _______________________________________