MMMD

MMMD is a Roman numeral representing the number 3500. It is formed by the symbol M (1000) three times followed by D (500), and is read additively as 1000 + 1000 + 1000 + 500, yielding 3500. Because the D follows the Ms, there is no subtractive relationship in this sequence.

In standard Roman numeral notation, thousands are written with Ms, and the subtractive principle is applied only in specific cases such as IV for 4 or IX for 9. The sequence MMMD fits within the conventional range used in modern representations of Roman numerals, typically up to 3999. While three consecutive Ms are common, longer runs of the same symbol are less typical in some stylistic conventions.

Modern usage of MMMD is primarily in contexts involving Roman numerals, such as scholarly examples, inscriptions, or typographic demonstrations. It is not a term with independent meaning outside numeral notation, but it serves as a straightforward illustration of additive roman numerals and the value of 3500. In discussions of numeral systems, MMMD may appear as an example of how large values are composed from basic symbols.