11871193
This number is a prime.
The smaller of the smallest set of two primes (11871193 and
12011213) obtained by concatenating in ascending order
two-two from the set of 4 consecutive four-digit primes
{1187, 1193, 1201, 1213}. [Bajpai]
Printed from the PrimePages <t5k.org> © G. L. Honaker and Chris K. Caldwell