1777

This number is a prime.

Carl Friedrich Gauss, "The Prince of Mathematicians," was born in 1777.

In 1777 the symbol i for imaginary unit was first used by Leonhard Euler, in a memoir. [Gevisier]

Johann Lambert, the first to prove that π was irrational, died in the prime year 1777.

In January of this prime year the people of New Connecticut declared their independence, later becoming the state of Vermont. [Green]