Il numero romano MCCCXVII nel sistema decimale vale: 1317.
MCCCXVII in latino si scrive mille trecenti septemdecim,
mentre in italiano milletrecentodiciassette.
MCCXCVIII, MCCXCIX, MCCC, MCCCI, MCCCII, MCCCIII, MCCCIV, MCCCV, MCCCVI, MCCCVII, MCCCVIII, MCCCIX, MCCCX, MCCCXI, MCCCXII, MCCCXIII, MCCCXIV, MCCCXV, MCCCXVI, MCCCXVIII, MCCCXIX, MCCCXX, MCCCXXI, MCCCXXII, MCCCXXIII, MCCCXXIV, MCCCXXV, MCCCXXVI, MCCCXXVII, MCCCXXVIII, MCCCXXIX, MCCCXXX, MCCCXXXI, MCCCXXXII, MCCCXXXIII, MCCCXXXIV, MCCCXXXV, MCCCXXXVI