10000100010002

10000100010002 is a 14-digit numeric sequence that is often cited as an example in discussions of barcode-based identifier systems. In the context of global trade item numbering, sequences of this length can function as GTIN-14 identifiers used on packaging to uniquely identify trade items throughout the supply chain. The digits are typically structured to encode a company prefix, an item reference, and a packaging indicator, with the final digit serving as a check digit to help detect errors during scanning or data entry.

When interpreted as a GTIN-14 code, the final digit is calculated from the preceding 13 digits using the Mod 10 check algorithm. For the sequence 1000010001000, the calculated check digit would be 3, not 2. Therefore, as written, 10000100010002 would not constitute a valid GTIN-14 code. This illustrates how a numeral string can be structurally compatible with barcode systems but require precise check-digit validation to be considered a correct identifier.

Beyond barcode use, sequences like 10000100010002 can appear in educational materials, datasets, or internal inventory schemas as illustrative identifiers. They may be used to demonstrate principles of data integrity, encoding schemes, and supply-chain logistics without referring to a specific real-world product.

See also: GTIN, GS1, UPC, EAN, check digit.