46890...45689 (456-digits)

This number is a probable-prime (likely to be a prime but we have not (re-)proven it on this site).

The smallest prime formed from the first n composite numbers mod 10, i.e., {4, 6, 8, 9, 0, 2, 4, 5, 6, 8, 0, 1, 2, 4, 5, 6, 7, 8, 0, 2, 3, … }. Here, n = 456. [Honaker]