19

This number is a prime.

Single Curio View:   (Seek other curios for this number)
19 is the smallest prime p such that 10*p {+ 1, 3, 7, and 9} are all primes. [Das]

Submitted: 1999-09-02 23:40:00;   Last Modified: 2018-04-06 19:47:06.
Printed from the PrimePages <t5k.org> © G. L. Honaker and Chris K. Caldwell