Talk:John Machin

Why 5 and 239?
Where do the magic numbers 5 and 239 come from, and how do they relate to pi? - pne (talk) 11:44, 22 November 2012 (UTC)
 * The article links to the derivation. Bryanrutherford0 (talk) 13:21, 1 October 2014 (UTC)
 * The link looks like it goes to the Wikipedia article for ‘derivation’ so it's easy to understand why he missed it. — Preceding unsigned comment added by 82.139.82.82 (talk) 10:35, 29 December 2015 (UTC)