I've always understood Ramanujan to be known less for "knowing infinity" than for "knowing" all the positive integers: https://en.wikipedia.org/wiki/Srinivasa_

I've always understood Ramanujan to be known less for "knowing infinity" than for "knowing" all the positive integers: https://en.wikipedia.org/wiki/Srinivasa_Ramanujan#Hardy.E2.80.93Ramanujan_number_1729 https://en.wikipedia.org/wiki/Srinivasa_Ramanujan#Hardy.E2.8...