1789

This number is a prime.

+ The year the first President of the United States (George Washington) took office.

+ The French mathematician Augustin-Louis Cauchy was born in 1789. [Luhn]

+ Seventeen 89's followed by eighty-nine 17's is a prime of palindromic length. [De Geest]

+ The year Baptist minister Elijah Craig established a still in Georgetown, Kentucky, and began producing America's first bourbon whiskey from a base of corn.

+ The largest emirp formed from the sum of two digits followed from a concatenation of these digits. [Loungrides]

+ Statehood for North Carolina occurred in an emirp year (1789). [Green]

+ The smallest emirp whose sum of digits is an odd composite number. [Loungrides]

+ The sum of the first 1789 Sophie Germain prime numbers falls between a pair of prime twins. [Gaydos]

+ The "Storming of the Bastille" occurred in 1789. [Loungrides]

+ Another emirp is created if the internal digits of 1789 are switched. It is the smallest 4-digit distinct-digit emirp with this property. [Loungrides]

+ Uranium was discovered in 1789 by German chemist Martin Klaproth in the mineral pitchblende. [Morris]

+ Consider the concatenation of the first 1789 positive even integers (i.e., 2468101214...357435763578). Half of this number is a 6604-digit probable prime. [Sumpeloh]

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