4637
This number is a prime.
4637 is the largest known prime number p than can produce another prime by adding 1 to the product of all the primitive roots of p. [Kalogeropoulos]
(There is one curio for this number that has not yet been approved by an editor.)
Printed from the PrimePages <t5k.org> © G. L. Honaker and Chris K. Caldwell