# 181

This number is a prime.

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

The smaller prime in the first multidigit "Gridgeman pair." A Gridgeman pair is two palindromic primes, which differ only in that their middle digits are *x*and

*x*+ 1 respectively. These are named in honor of Norman T. Gridgeman (1912-1995) who conjectured that there are an infinite number of primes in this form. [King]

Submitted: 2004-04-08 17:16:49; Last Modified: 2009-09-06 13:52:45.

Printed from the PrimePages <primes.utm.edu> © G. L. Honaker and Chris K. Caldwell