20589...99993 (45-digits)

This number is a prime.

                           20589 1132094648 9999999999 9999999999 9999999993

Just showing those entries submitted by 'Gudipati': (Click here to show all)

(2 x 3 x 5)^{2 x 3 x 5} - 7 is prime. Notice the four prime digits. [Gudipati]