vierstelligen

Vierstellige is the German term used to describe numbers that consist of four digits in decimal notation. The expression is common in mathematics, statistics, data processing, and everyday language to distinguish four-digit numbers from those with more or fewer digits. The corresponding noun phrases are eine vierstellige Zahl for a single number and vierstellige Zahlen for the plural.

In standard decimal notation, a four-digit number ranges from 1000 to 9999 inclusive. The leading digit is therefore between 1 and 9. Examples include 1000, 2345, and 9999. When used as a code or identifier, a four-digit sequence may begin with zero, as in PIN codes or other security codes, for example 0123 or 0000.

Grammatically, vierstellige is the attributive form used with feminine nouns in singular (eine vierstellige Zahl) and with plural nouns (vierstellige Zahlen). In other grammatical cases, the adjective takes the appropriate inflection, e.g., einer vierstelligen Zahl, vierstelligen Zahlen. The term is typically contrasted with other digit-length descriptors such as drei- oder fünfstellige Zahlen in relevant contexts.