This number is a prime.

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

+ The smallest palindromic prime of form PSn formed by concatenating in order the product P of the digits of a double-digit prime n, the sum S of the digits and the number n, case, (n=19), i.e., P=9, S=10. [Loungrides]

Printed from the PrimePages <t5k.org> © G. L. Honaker and Chris K. Caldwell