Il numero romano DCCCLXXIII nel sistema decimale vale: 873.
DCCCLXXIII in latino si scrive octingenti septuaginta tres,
mentre in italiano ottocentosettantatré.
DCCCLIV, DCCCLV, DCCCLVI, DCCCLVII, DCCCLVIII, DCCCLIX, DCCCLX, DCCCLXI, DCCCLXII, DCCCLXIII, DCCCLXIV, DCCCLXV, DCCCLXVI, DCCCLXVII, DCCCLXVIII, DCCCLXIX, DCCCLXX, DCCCLXXI, DCCCLXXII, DCCCLXXIV, DCCCLXXV, DCCCLXXVI, DCCCLXXVII, DCCCLXXVIII, DCCCLXXIX, DCCCLXXX, DCCCLXXXI, DCCCLXXXII, DCCCLXXXIII, DCCCLXXXIV, DCCCLXXXV, DCCCLXXXVI, DCCCLXXXVII, DCCCLXXXVIII, DCCCLXXXIX, DCCCXC, DCCCXCI, DCCCXCII