This number is a prime.
The smaller of the only emirp pair (3917, 7193) whose members are both derangements of the four odd digits 1, 3,
7, 9. [Beedassy]
Prime numbers ending in 3 tend to be followed by primes ending in 9 more often than 1 or 7. [Honaker]
Printed from the PrimePages <t5k.org> © G. L. Honaker and Chris K. Caldwell