Roman Numeral Converter

Factors, divisibility and many counting formulas require whole numbers. A decimal approximation to a fraction is a different representation from the exact fraction. Very large integers can also exceed the range in which ordinary floating-point numbers distinguish every neighboring integer.

Where a tool states that it uses exact integer or decimal arithmetic, read the supported operation and size limits. An integer division can return a quotient and remainder, while a decimal division can produce a truncated expansion. Neither should be mistaken for rounding unless the method says so.

Binary, hexadecimal, Roman and ordinary decimal inputs follow different symbol conventions. A numeral can be valid in one representation and invalid in another. Leading signs, fractional parts and exponent notation are supported only when the form describes them.

Use the worked example to check the representation of both the input and output. A sequence tool follows the explicit rule you choose; a finite list does not identify a unique hidden pattern.