This number is a composite.
858 = 2 * 3 * 11 * 13 is the smallest palindrome with 4 distinct prime factors. Note that the reversal of each is prime. [Post]
Smallest palindromic prime p such that p-1, p+1, p-5, and p+5
are all primes. [Sariyar]
Printed from the PrimePages <primes.utm.edu> © G. L. Honaker and Chris K. Caldwell