1493

This number is a prime.

The year that Christopher Columbus returned to Spain after his first New World voyage.

The largest known Stern prime, i.e., it is not the sum of a smaller prime and twice the square of a nonzero integer. These are Named after Jewish mathematician Moritz Abraham Stern (1807-1894).

Minimal number of simplices in a triangulation of the 7-dimensional cube, and the largest prime proven to be the minimal number of simplices in a triangulation of the n-dimensional cube for any n. [Post]