This number is a prime.

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

+ 589997 and the 589997th prime number (8799899) are the first case of a prime and its prime index together having an average digit value greater than 8. Are there any that are greater than 106/13 (8.153846+)? [Gaydos]

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