Il numero romano MCDLXXX nel sistema decimale vale: 1480.
MCDLXXX in latino si scrive mille quadringenti octoginta,
mentre in italiano millequattrocentottanta.
MCDLXI, MCDLXII, MCDLXIII, MCDLXIV, MCDLXV, MCDLXVI, MCDLXVII, MCDLXVIII, MCDLXIX, MCDLXX, MCDLXXI, MCDLXXII, MCDLXXIII, MCDLXXIV, MCDLXXV, MCDLXXVI, MCDLXXVII, MCDLXXVIII, MCDLXXIX, MCDLXXXI, MCDLXXXII, MCDLXXXIII, MCDLXXXIV, MCDLXXXV, MCDLXXXVI, MCDLXXXVII, MCDLXXXVIII, MCDLXXXIX, MCDXC, MCDXCI, MCDXCII, MCDXCIII, MCDXCIV, MCDXCV, MCDXCVI, MCDXCVII, MCDXCVIII, MCDXCIX