This number is a prime.
If you place this palindromic prime in a 3-by-3 square,
then each column and diagonal, sum of each column and diagonal, along with the total sum digits is prime. [Blanchette]7 3 3 3 5 3 3 3 7
Printed from the PrimePages <primes.utm.edu> © G. L. Honaker and Chris K. Caldwell