# 163

This number is a prime.

Single Curio View: (Seek other curios for this number)

In the April 1975 issue of *Scientific American*, Martin Gardner wrote (jokingly) that Ramanujan's constant (

*e*^(π*sqrt(163))) is an integer. The name "Ramanujan's constant" was actually coined by Simon Plouffe and derives from the above April Fool's joke played by Gardner. The French mathematician Charles Hermite (1822-1901) observed this property of 163 long before Ramanujan's work on these so-called "almost integers." [Aitken]

Submitted: 1999-09-02 23:40:00; Last Modified: 2009-05-09 05:38:39.

Printed from the PrimePages <t5k.org> © G. L. Honaker and Chris K. Caldwell