Il numero romano MMMMDCCCI nel sistema decimale vale: 4801.
MMMMDCCCI in latino si scrive quattuor milia octingenti unus,
mentre in italiano quattromilaottocentouno.
MMMMDCCLXXXII, MMMMDCCLXXXIII, MMMMDCCLXXXIV, MMMMDCCLXXXV, MMMMDCCLXXXVI, MMMMDCCLXXXVII, MMMMDCCLXXXVIII, MMMMDCCLXXXIX, MMMMDCCXC, MMMMDCCXCI, MMMMDCCXCII, MMMMDCCXCIII, MMMMDCCXCIV, MMMMDCCXCV, MMMMDCCXCVI, MMMMDCCXCVII, MMMMDCCXCVIII, MMMMDCCXCIX, MMMMDCCC, MMMMDCCCII, MMMMDCCCIII, MMMMDCCCIV, MMMMDCCCV, MMMMDCCCVI, MMMMDCCCVII, MMMMDCCCVIII, MMMMDCCCIX, MMMMDCCCX, MMMMDCCCXI, MMMMDCCCXII, MMMMDCCCXIII, MMMMDCCCXIV, MMMMDCCCXV, MMMMDCCCXVI, MMMMDCCCXVII, MMMMDCCCXVIII, MMMMDCCCXIX, MMMMDCCCXX