This number is a prime.
1 4689012141
A prime formed by concatenating all the non-primes from 14 to 1, 14-12-10-9-8-6-4-1, then reversing the whole string. [Rivera]
A prime formed by concatenating all the non-primes from 14 to 1, 14-12-10-9-8-6-4-1, then reversing the whole string. [Rivera]