Il numero romano MMMMCMLXXIII nel sistema decimale vale: 4973.
MMMMCMLXXIII in latino si scrive quattuor milia nongenti septuaginta tres,
mentre in italiano quattromilanovecentosettantatré.
MMMMCMLIV, MMMMCMLV, MMMMCMLVI, MMMMCMLVII, MMMMCMLVIII, MMMMCMLIX, MMMMCMLX, MMMMCMLXI, MMMMCMLXII, MMMMCMLXIII, MMMMCMLXIV, MMMMCMLXV, MMMMCMLXVI, MMMMCMLXVII, MMMMCMLXVIII, MMMMCMLXIX, MMMMCMLXX, MMMMCMLXXI, MMMMCMLXXII, MMMMCMLXXIV, MMMMCMLXXV, MMMMCMLXXVI, MMMMCMLXXVII, MMMMCMLXXVIII, MMMMCMLXXIX, MMMMCMLXXX, MMMMCMLXXXI, MMMMCMLXXXII, MMMMCMLXXXIII, MMMMCMLXXXIV, MMMMCMLXXXV, MMMMCMLXXXVI, MMMMCMLXXXVII, MMMMCMLXXXVIII, MMMMCMLXXXIX, MMMMCMXC, MMMMCMXCI, MMMMCMXCII