61

This number is a prime.

Single Curio View:   (Seek other curios for this number)
61 is the 7th prime of the form 3k+1 and 61 = (77+777)/(7+7). Note that seven 7's are used. [Firoozbakht]

Submitted: 2004-07-22 00:21:29;   Last Modified: 2009-10-11 10:49:01.
Printed from the PrimePages <primes.utm.edu> © G. L. Honaker and Chris K. Caldwell