5

This number is a prime.

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

In 1769 Lambert noted that the number of the digits of the repetend of a repeating decimal, 1/a, divides a-1 for a = 3 or a prime greater than 5.

Submitted: 1999-09-02 23:40:00; Last Modified: 2008-01-30 17:28:00.