19

This number is a prime.

Single Curio View:   (Seek other curios for this number)
The largest natural number n for which the sum of digits is not smaller than n/2. [Capelle]

Submitted: 2009-09-17 09:28:16;   Last Modified: 2009-09-17 20:48:14.
Printed from the PrimePages <t5k.org> © G. L. Honaker and Chris K. Caldwell