Il numero romano MMDCCIII nel sistema decimale vale: 2703.
MMDCCIII in latino si scrive duo milia septingenti tres,
mentre in italiano duemilasettecentotré.
MMDCLXXXIV, MMDCLXXXV, MMDCLXXXVI, MMDCLXXXVII, MMDCLXXXVIII, MMDCLXXXIX, MMDCXC, MMDCXCI, MMDCXCII, MMDCXCIII, MMDCXCIV, MMDCXCV, MMDCXCVI, MMDCXCVII, MMDCXCVIII, MMDCXCIX, MMDCC, MMDCCI, MMDCCII, MMDCCIV, MMDCCV, MMDCCVI, MMDCCVII, MMDCCVIII, MMDCCIX, MMDCCX, MMDCCXI, MMDCCXII, MMDCCXIII, MMDCCXIV, MMDCCXV, MMDCCXVI, MMDCCXVII, MMDCCXVIII, MMDCCXIX, MMDCCXX, MMDCCXXI, MMDCCXXII