180320

180320 is a six-digit numeral that is most commonly read as a date in day–month–year notation. In this interpretation, it represents March 18, 2020. When written in ISO 8601 format, the same moment is expressed as 2020-03-18. The sequence can also appear as a plain numeric identifier in catalogs, records, or data fields, where its meaning must be defined by accompanying metadata.

In calendar and archival contexts, 180320 may appear on stamps, labels, or documents to indicate the date of production, registration, or event. Because the DDMMYY format is ambiguous to audiences accustomed to other conventions, clarifying context is important when this string is used across regions.

In mathematics, 180320 is an even composite number. Its prime factorization is 2^5 × 5 × 7^2 × 23, reflecting a structure of repeated small primes. Numerals of this form are sometimes used as sample numbers in demonstrations or as identifiers in simple datasets.

In information systems, 180320 may serve as a batch, version, or file identifier depending on the naming scheme of an organization. As such, it is not inherently meaningful without context, but it can be a concise way to encode a date or a sequential label within a larger record.

See also: date notation, DDMMYY, ISO 8601, numeric identifiers.