Fatto matematico: 1804 is the number of 3×3 sliding puzzle positions that require exactly 14 moves to solve starting with the hole on a side.
Trivia: 1804 is a boring number.
Data storica: December 8th is the day in 1963 that Pan Am Flight 214, a Boeing 707, is struck by lightning and crashes near Elkton, Maryland, United States, killing all 81 people on board.