Fatto matematico: 2787 is a value of n for which the first n binary digits of p form a prime.
Trivia: 2787 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Data storica: August 18th is the day in 1848 that Camila O'Gorman and Ladislao Gutierrez are executed on the orders of Argentine dictator Juan Manuel de Rosas.