Il numero romano MCCLXXIII nel sistema decimale vale: 1273.
MCCLXXIII in latino si scrive mille ducenti septuaginta tres,
mentre in italiano milleduecentosettantatré.
MCCLIV, MCCLV, MCCLVI, MCCLVII, MCCLVIII, MCCLIX, MCCLX, MCCLXI, MCCLXII, MCCLXIII, MCCLXIV, MCCLXV, MCCLXVI, MCCLXVII, MCCLXVIII, MCCLXIX, MCCLXX, MCCLXXI, MCCLXXII, MCCLXXIV, MCCLXXV, MCCLXXVI, MCCLXXVII, MCCLXXVIII, MCCLXXIX, MCCLXXX, MCCLXXXI, MCCLXXXII, MCCLXXXIII, MCCLXXXIV, MCCLXXXV, MCCLXXXVI, MCCLXXXVII, MCCLXXXVIII, MCCLXXXIX, MCCXC, MCCXCI, MCCXCII