847

This number is a composite.

Single Curio View:   (Seek other curios for this number)
The smallest composite C such that C+10^x is prime for more than five distinct powers: x=1,...,6. [Rivera]

Submitted: 2019-07-09 11:47:28;   Last Modified: 2019-07-09 12:35:37.
Printed from the PrimePages <t5k.org> © G. L. Honaker and Chris K. Caldwell