1848

This number is a composite.

The first (and through 2000, only) year in which the number of U.S. presidential electoral votes cast was a prime number for every vote getter. [Wolfe]

1848 is the smallest number that may be expressed as the difference between the squares of consecutive primes in three different ways (463² - 461² = 233² - 229² = 157² - 151²). [King]