Fatto matematico: 1917 is the number of possible configurations of pegs (up to symmetry) after 27 jumps in solitaire.
Trivia: 1917 is an unremarkable number.
Data storica: March 31st is the day in 1717 that a sermon on "The Nature of the Kingdom of Christ" by Benjamin Hoadly, the Bishop of Bangor, provokes the Bangorian Controversy.