This number is a prime.

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

+ 1187 concatenated with either the previous prime (1181) in order or the next prime (1193) in order is prime. This is the smallest 4-digit number with this property. [Mix]

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