111

This number is a composite.

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

The smallest palindromic number whose English names contain a prime number of letters. [Russo]

The smallest multidigit palindromic number n such that the number of primes below n^2 does not exceed n times the number of primes below n. [Russo]

The smallest palindromic number n such that the sum of its digits is a prime factor. [Russo]