10619...19137 (34-digits)

This number is a prime.

                                       1061 9791997333 1373931193 3719319137

1061979199733313739311933719319137 is the earliest-largest prime number such that every four consecutive digits produce a distinct prime: 1061, 0619, 6197, ... , 9137, for a total of 31 distinct prime numbers. [Rivera]