MCDIII

MCDIII is the Roman numeral notation for the number 1403. It is formed by the sequence M (1000) followed by CD (400) and III (3). In subtractive notation, the smaller numeral placed before a larger one reduces the value, so CD equals 400, and the total is 1403. This is a standard and widely accepted representation within classical Roman numerals.

As a numeric value, 1403 is composite, with prime factorization 23 × 61. It is an odd number and, when used as a year, places events in the early 15th century in historical timelines, particularly in the context of the Julian calendar which was in use at the time. The Gregorian calendar would not be adopted until several centuries later.

In modern usage, MCDIII often appears in dated inscriptions, bibliographic references, product model numbers, or decorative contexts where Roman numerals are preferred for stylistic reasons. It does not denote a specific universally recognized entity aside from its numerical value and year indication; its meaning depends on the surrounding text.