General fact: 2917 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Mathematical fact: 2917 is the number of digits of the 21^{st} Mersenne prime.
Trivia: 2917 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Historical date: December 26th is the day in 1900 that a relief crew arrives at the lighthouse on the Flannan Isles of Scotland, only to find the previous crew has disappeared without a trace.