831
This number is a composite.
There are 831 numbers q, such that π(q)=r contain distinct
digits exactly once each. [Gupta]
Printed from the PrimePages <t5k.org> © G. L. Honaker and Chris K. Caldwell
This number is a composite.
There are 831 numbers q, such that π(q)=r contain distinct
digits exactly once each. [Gupta]