Il numero romano MLXXI nel sistema decimale vale: 1071.
MLXXI in latino si scrive mille septuaginta unus,
mentre in italiano millesettantuno.
MLII, MLIII, MLIV, MLV, MLVI, MLVII, MLVIII, MLIX, MLX, MLXI, MLXII, MLXIII, MLXIV, MLXV, MLXVI, MLXVII, MLXVIII, MLXIX, MLXX, MLXXII, MLXXIII, MLXXIV, MLXXV, MLXXVI, MLXXVII, MLXXVIII, MLXXIX, MLXXX, MLXXXI, MLXXXII, MLXXXIII, MLXXXIV, MLXXXV, MLXXXVI, MLXXXVII, MLXXXVIII, MLXXXIX, MXC