Modulus 97 Checksum
Modulus 97 is the algebraic algorithm defined by ISO 7064 MOD-97-10 used to check the mathematical validity of bank account identifiers, including IBANs. The algorithm converts alphanumeric characters to numbers, performs modulo-97 division, and verifies that the remainder equals 1 to detect entry errors.
Aliases: MOD-97, MOD-97-10, ISO 7064 MOD-97-10
Standards & Citations
- 🌐 ISO 9362 / ISO 13616: International standards for financial identifiers (ISO OBP).
- 🏢 SWIFT Registration Authority: Designated ISO registration authority (swift.com).
- 📂 swiftbic.org Data Register: Provenance registry for bank code data (Data Sources).