Fatto matematico: 2596 is the number of triangles of any size contained in the triangle of side 21 on a triangular grid.
Trivia: 2596 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Data storica: February 8th is the day in 1887 that the Dawes Act authorizes the President of the United States to survey Native American tribal land and divide it into individual allotments.