The original exegesis, which prompted this blog post, was by me. I am currently transitioning to a different blog engine, so the page is offline right now, but

The original exegesis, which prompted this blog post, was by me. I am currently transitioning to a different blog engine, so the page is offline right now, but it's still available here https://web.archive.org/web/20220513113609/neilk.net/blog/2000/06/01/abigails-regex-to-test-for-prime-numbers/ https://web.archive.org/web/20220513113609/neilk.net/blog/20...