This number is a prime.
The largest invertible prime with the least length that
contains all of the invertible digits, 0, 1, 6, 8, 9. [Loungrides]
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