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Your actual account number may be up to 12 digits long, and it identifies you as the owner of the credit card account. Credit card numbers are assigned by the financial institution issuing the card.
The next 6-12 digits of the credit card number are the account number. This is the part that identifies the individual credit card account. Unlike the IIN, the account number can vary in length ...
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.
A card belongs to a account. A credit card is a payment card, usually issued by a bank, allowing its users to purchase goods or services, or withdraw cash, on credit. Using the card thus accrues debt that has to be repaid later. [1] Credit cards are one of the most widely used forms of payment across the world. [2]
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.
"PAN" is an acronym for primary account number, i.e., the "card number" on either a debit or a credit card. PAN truncation simply replaces the card number printed on a customer receipt with a printout of only the last four digits, the remainder being replaced usually by asterisks. This hides the card number from anyone who obtains the receipt ...
Therefore, systems that pad to a specific number of digits (by converting 1234 to 0001234 for instance) can perform Luhn validation before or after the padding and achieve the same result. The algorithm appeared in a United States Patent [ 1 ] for a simple, hand-held, mechanical device for computing the checksum.
The first 5 digits of the account number can be used to identify the bank (originally also the branch, but clients can now often keep their account number when they move to another branch). Spain also has a similar format, with the first 4 digits identifying the banking company, the next 4 identifying the branch, the next 2 being the checksum ...