Invented in 1998 by Perl hacker Abigail: http://neilk.net/blog/2000/06/01/abigails-regex-to-test-for-prime-numbers/ http://neilk.net/blog/2000/06/01/abigails-r

Invented in 1998 by Perl hacker Abigail: http://neilk.net/blog/2000/06/01/abigails-regex-to-test-for-prime-numbers/ http://neilk.net/blog/2000/06/01/abigails-regex-to-test-for-... (check out Abigail's other JAPHs if you like stuff like this)