159

This number is a composite.

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

+ 159 = 3 x 53, and upon concatenating the prime factors, we have a peak palindrome, 353, which is itself a prime. [Trotter]

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