Hecho general: 6191 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Hecho matemático: 6191 is a boring number.
Trivia: 6191 is a boring number.
Fecha histórica: December 12th is the day in 2011 that the last Soldiers of the 1st Cavalry Division leave Iraq as part of troop drawdown marking the end of their part in the 8 year war.