Il numero romano MCCLXIII nel sistema decimale vale: 1263.
MCCLXIII in latino si scrive mille ducenti sexaginta tres,
mentre in italiano milleduecentosessantatré.
MCCXLIV, MCCXLV, MCCXLVI, MCCXLVII, MCCXLVIII, MCCXLIX, MCCL, MCCLI, MCCLII, MCCLIII, MCCLIV, MCCLV, MCCLVI, MCCLVII, MCCLVIII, MCCLIX, MCCLX, MCCLXI, MCCLXII, MCCLXIV, MCCLXV, MCCLXVI, MCCLXVII, MCCLXVIII, MCCLXIX, MCCLXX, MCCLXXI, MCCLXXII, MCCLXXIII, MCCLXXIV, MCCLXXV, MCCLXXVI, MCCLXXVII, MCCLXXVIII, MCCLXXIX, MCCLXXX, MCCLXXXI, MCCLXXXII