681089
This number is a prime.
Just showing those entries submitted by 'Bajpai': (Click here to show all)
The smallest invertible prime of the form prime (n)+ phi(n) containing all the invertible digits, (case n=52527). [Bajpai]
Printed from the PrimePages <t5k.org> © G. L. Honaker and Chris K. Caldwell