23576489
This number is a prime.
The smallest distinct-digit prime formed from the concatenation in order of all of the prime digits followed from a concatenation of all of the composite digits. [Loungrides]
(There are 2 curios for this number that have not yet been approved by an editor.)
Printed from the PrimePages <t5k.org> © G. L. Honaker and Reginald McLean