989466010702279111

This number is a prime.

                                                         98946601 0702279111

+ R19-19! is the largest positive number of form Rm-m! that is prime. It is the only such emirp and case where m, Rm, and Rm-m! are all primes. [Loungrides]

(There is one curio for this number that has not yet been approved by an editor.)

Printed from the PrimePages <primes.utm.edu> © G. L. Honaker and Chris K. Caldwell