89999...99999 (94-digits)

This number is a prime.

                                                  8999 9999999999 9999999999
9999999999 9999999999 9999999999 9999999999 9999999999 9999999999 9999999999

The largest near-repdigit prime p, less than a googol, of the form p=9*10^n-1 (n=93). [Loungrides]