19819
This number is a prime.
The smallest invertible prime p such that p-π(p) is a perfect cube, i.e., (19819-2243 = 26^3). [Bajpai]
Printed from the PrimePages <t5k.org> © G. L. Honaker and Chris K. Caldwell
This number is a prime.
The smallest invertible prime p such that p-π(p) is a perfect cube, i.e., (19819-2243 = 26^3). [Bajpai]