191

This number is a prime.

Single Curio View:   (Seek other curios for this number)
The prime quadruplet {191, 193, 197, 199} has sums of digits {11, 13, 17, 19}, that is the first multi digit prime quadruplet. [Loungrides]

Submitted: 2012-05-20 07:25:15;   Last Modified: 2020-07-29 13:17:37.
Printed from the PrimePages <primes.utm.edu> © G. L. Honaker and Chris K. Caldwell