# 15959

This number is a prime.

Just showing those entries submitted by 'Loungrides': (Click here to show all)

The smaller of only two 4-esthetic primes, i.e., primes whose successive digits differ by 4. The other is 95959. Note that the reversal of 15959 is a “4-esthetic brilliant number”, i.e., 95951 = 229 × 419. Can you find other such brilliant numbers? [Loungrides]

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