An anonymous reader writes: A Japanese programmer that goes by the handle JA0HXV announced 16 October that he has computed Pi to 10 trillion digits. This breaks the previous world record of 5 trillion digits. Computation began in October of 2010 and finished yesterday after multiple hard disk problems, he said. Details in English are not fully available yet, but the Japanese page http://ja0hxv.calico.jp/pai/pietc.html gives further details. JA0HXV has held computation records for Pi in the past.