DCLXXXIII

DCLXXXIII is the Roman numeral for the number 683. It is formed by the symbols D (500), C (100), L (50), X (10) repeated three times (XXX for 30), and I repeated three times (III for 3). The representation D-C-L-XXX-III uses only additive notation, with no subtractive pairs such as IV or IX.

In the system of Roman numerals, each letter corresponds to a fixed value: I 1, V 5, X 10, L 50, C 100, D 500, and M 1000. Numbers are typically written from largest to smallest, and subtractive notation is used only for certain combinations to prevent four consecutive identical symbols. DCLXXXIII follows the standard descending order and is a straightforward, non-subtractive form within the range below M.

683 has mathematical significance as a prime number, meaning it has no positive divisors other than 1 and itself. In historical and modern contexts, DCLXXXIII can denote a year, such as AD 683 or 683 BCE, and may appear in inscriptions, monarchial regnal numbers, chapter indicators, or other enumerations. In everyday usage, Roman numerals are largely symbolic or decorative, while Arabic numerals are typically preferred for clarity and calculation. DCLXXXIII remains a canonical example of additive Roman numeral notation.