00001

00001 is the numeral 1 represented with five digits, using leading zeros. It is commonly used as an identifier for the first item in a sequence, such as a product, file, or record, while preserving a fixed width for sorting and display.

In computing, many programming languages provide formatting options to produce strings like "00001" (for example, formatting the integer 1 as a five-digit zero-padded string). This approach helps align lists and maintain lexical order in file naming and data presentation. If the value is treated strictly as a number, the leading zeros may be lost, which can affect display or string-based comparisons.

In data management and databases, some identifiers are stored as strings specifically to preserve leading zeros. This is important for codes such as serial numbers, ZIP-like postal codes, or catalog numbers where the exact width and characters must be kept for consistency and matching.

In media production and digital assets, padded five-digit forms such as 00001 or 00002 are commonly used for sequential file and frame naming. This practice supports predictable ordering when files are listed or indexed across operating systems and workflows.

Variations exist across systems, with some using fewer or more digits depending on the required range and sorting behavior. The standard example 00001 illustrates the concept of zero-padding as a method to standardize identifiers and improve human and machine readability.

See also: leading zeros, zero padding, serial number, fixed-width formatting.