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  2. Permanent account number - Wikipedia

    en.wikipedia.org/wiki/Permanent_account_number

    The fifth character of the PAN is the first character of either of the first name, surname or last name of the person The last (tenth) character is an alphabetic digit used as a check-sum to verify the validity of that current code.

  3. Payment card number - Wikipedia

    en.wikipedia.org/wiki/Payment_card_number

    Payment card numbers are composed of 8 to 19 digits, [1] The leading six or eight digits are the issuer identification number (IIN) sometimes referred to as the bank identification number (BIN). [2]: 33 [3] The remaining numbers, except the last digit, are the individual account identification number. The last digit is the Luhn check digit.

  4. Luhn algorithm - Wikipedia

    en.wikipedia.org/wiki/Luhn_algorithm

    The check digit is calculated by (()), where s is the sum from step 3. This is the smallest number (possibly zero) that must be added to s {\displaystyle s} to make a multiple of 10. Other valid formulas giving the same value are 9 − ( ( s + 9 ) mod 1 0 ) {\displaystyle 9-((s+9){\bmod {1}}0)} , ( 10 − s ) mod 1 0 {\displaystyle (10-s){\bmod ...

  5. How To Find Your Routing and Account Numbers on a Check - AOL

    www.aol.com/finance/routing-account-numbers...

    At first, these numbers served as check processing endpoints. When a customer from one bank wrote a check to a customer at another bank, the routing number let everyone know which bank would pay ...

  6. ISO/IEC 7812 - Wikipedia

    en.wikipedia.org/wiki/ISO/IEC_7812

    It specifies "a numbering system for the identification of the card issuers, the format of the issuer identification number (IIN) and the primary account number (PAN)", [1] and procedures for registering IINs. [2] It was first published in 1989. ISO/IEC 7812 has two parts: Part 1: Numbering system; Part 2: Application and registration procedures

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  8. Check digit - Wikipedia

    en.wikipedia.org/wiki/Check_digit

    For instance, the UPC-A barcode for a box of tissues is "036000241457". The last digit is the check digit "7", and if the other numbers are correct then the check digit calculation must produce 7. Add the odd number digits: 0+6+0+2+1+5 = 14. Multiply the result by 3: 14 × 3 = 42. Add the even number digits: 3+0+0+4+4 = 11.

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