9817
This number is a prime.
The largest prime formed from a double-digit number
followed by the sum of its digits. [Loungrides]
There are 9817 nines in the first 9817 cubes. [Gaydos]
(There is one curio for this number that has not yet been approved by an editor.)
Printed from the PrimePages <t5k.org> © G. L. Honaker and Chris K. Caldwell