MMMDCCCXV

MMMDCCCXV is a Roman numeral that represents the number 3815. In Roman numerals, the letters M, D, C, X, and V denote 1000, 500, 100, 10, and 5 respectively. This form uses additive notation, adding the values of the symbols in sequence to reach the total.

It is formed as MMM (3000) + D (500) + CCC (300) + XV (15), giving 3815. The sequence includes three consecutive Ms, which is permissible in traditional usage to express large totals without employing subtractive pairs such as IV or IX.

Historical and contemporary usage: Roman numerals were used to indicate years and volumes in many contexts. For numbers around 3000–4000, writers sometimes used three Ms at the start; more than three consecutive identical symbols is usually avoided in some conventions. Today, MMMDCCCXV would most commonly appear in decorative inscriptions, fictional settings, or as a numeric label on a publication or artifact.

See also: Roman numerals; Additive notation; Subtractive notation; List of numbers in Roman numerals.