Il numero romano CCCLXXIII nel sistema decimale vale: 373.
CCCLXXIII in latino si scrive trecenti septuaginta tres,
mentre in italiano trecentosettantatré.
CCCLIV, CCCLV, CCCLVI, CCCLVII, CCCLVIII, CCCLIX, CCCLX, CCCLXI, CCCLXII, CCCLXIII, CCCLXIV, CCCLXV, CCCLXVI, CCCLXVII, CCCLXVIII, CCCLXIX, CCCLXX, CCCLXXI, CCCLXXII, CCCLXXIV, CCCLXXV, CCCLXXVI, CCCLXXVII, CCCLXXVIII, CCCLXXIX, CCCLXXX, CCCLXXXI, CCCLXXXII, CCCLXXXIII, CCCLXXXIV, CCCLXXXV, CCCLXXXVI, CCCLXXXVII, CCCLXXXVIII, CCCLXXXIX, CCCXC, CCCXCI, CCCXCII