Il numero romano MMDLXIII nel sistema decimale vale: 2563.
MMDLXIII in latino si scrive duo milia quingenti sexaginta tres,
mentre in italiano duemilacinquecentosessantatré.
MMDXLIV, MMDXLV, MMDXLVI, MMDXLVII, MMDXLVIII, MMDXLIX, MMDL, MMDLI, MMDLII, MMDLIII, MMDLIV, MMDLV, MMDLVI, MMDLVII, MMDLVIII, MMDLIX, MMDLX, MMDLXI, MMDLXII, MMDLXIV, MMDLXV, MMDLXVI, MMDLXVII, MMDLXVIII, MMDLXIX, MMDLXX, MMDLXXI, MMDLXXII, MMDLXXIII, MMDLXXIV, MMDLXXV, MMDLXXVI, MMDLXXVII, MMDLXXVIII, MMDLXXIX, MMDLXXX, MMDLXXXI, MMDLXXXII