MCXI

MCXI is the Roman numeral that represents the number 1111. It is composed of four symbols: M for 1000, C for 100, X for 10, and I for 1. When written in descending order, these symbols are added left to right, so MCXI equals 1000 + 100 + 10 + 1 = 1111. This numeral does not employ subtractive notation, as the smaller values do not precede larger values to indicate subtraction in this configuration.

Historically, Roman numerals were used for dates, inscriptions, and various counts in the Roman world and medieval Europe. In modern texts MCXI may appear to indicate the year 1111 CE or be used in stylistic dating, chapter numbering, or cataloging where a traditional numeral style is desired. Outside of numeric contexts, MCXI can also appear as an arbitrary alphanumeric sequence or code depending on the source.

As an example of additive notation within the Roman numeral system, MCXI illustrates how larger symbols can be followed by smaller ones to accumulate a total without subtraction.