18311904

18311904 is an eight-digit numeric string that can serve as a date-like identifier in various records and databases. Because it contains two four-digit blocks, it is commonly interpreted as the year 1831 followed by the year 1904 when a hyphen or en dash is omitted.

In biographical contexts, the pattern 1831–1904 is used to indicate the lifespan of a person: born in 1831 and died in 1904. When punctuation is removed or suppressed in data exports, the lifespan can appear as 18311904. This compact form is often encountered in archives, catalog records, and digitized datasets that require fixed-width fields or minimal separators.

The same eight-digit format can also be used to denote a date range for events, such as activities spanning from 1831 to 1904, or as part of a catalog or accession number where the digits encode year information. In these uses, 18311904 is not inherently meaningful without the accompanying metadata that specifies its interpretation.

Due to its ambiguity, 18311904 should be interpreted carefully in any data processing workflow. When possible, source records should provide explicit separators or separate year fields to avoid misinterpretation.