99999...99901 (27-digits)

This number is a prime.

                                               9999999 9999999999 9999999901

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

The largest 27-digit prime. The first time the "largest n-digit prime" contains the digit zero. (The largest prime for n = 1, 2, 3, ... , 26 digits are all zeroless.) [Gudipati]