MMCDXLIII

MMCDXLIII is the Roman numeral for the number 2443. It is formed by the symbols MM (2000) plus CD (400) plus XL (40) plus III (3), illustrating the use of subtractive notation in modern Roman numerals for the pairs CD and XL.

In arithmetic, 2443 factors as 7 × 349, so MMCDXLIII represents a semiprime. Both 7 and 349 are prime, and the number is not divisible by 2, 3, or 5. This factorization is of interest in basic number theory as an example of a product of two primes.

As a designation, MMCDXLIII could denote the year 2443 CE when used in a calendar context. Beyond chronologies, Roman numerals like MMCDXLIII are sometimes used for numbering chapters, monarchs, movie sequels, edition labels, or other formal enumerations in various media and documents. The style remains common in contexts that preserve traditional numeral systems.

Overall, MMCDXLIII serves as a compact representation of the integer 2443 and reflects standard Roman numeral conventions, including the subtractive pairs CD and XL, alongside a digit-by-digit interpretation consistent with the additive-principle framework of Roman numerals.