Recollections of both his own and of relatives include his ability to compute square roots at the age of four, a full understanding of fractions by the age of five, and the ability to find prime numbers by the age of seven.
Recollections ng pareho sa kanyang sarili at ng mga kamag-anak isama ang kanyang kakayahan sa compute square Pinagmulan sa edad ng apat na, isang buong-unawa ng fraction ng edad na lima, at ang kakayahan upang mahanap ang kasikatan sa pamamagitan ng numero ng edad ng pitong.