997
This number is a prime.
Just showing those entries submitted by 'Luhn': (Click here to show all)
The smallest prime of the form 10p - p, where p is prime. [Luhn]
Printed from the PrimePages <t5k.org> © G. L. Honaker and Chris K. Caldwell
This number is a prime.
Just showing those entries submitted by 'Luhn': (Click here to show all)
The smallest prime of the form 10p - p, where p is prime. [Luhn]