10123496857

This number is a prime.

                                                                1 0123496857

The smallest pandigital prime whose square is also pandigital. That is, 10123496857 and 10123496857² = 102485188613688878449 are both pandigital. [Poo Sung]

The smallest pandigital prime that remains prime when each digit is replaced by its binary representation: 101101110010011101000101111. [Beedassy]