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This formula has been in use to validate a lot of identification numbers besides credit cards since its development by scientist Hans Peter Luhn from IBM.To teach you how to manually validate a specific number, lets do an example: Say we have In order for a credit card number to be valid, it has to be validated by the MOD 10 algorithm.
However, we do not provide you (obviously) with the correspondent verification code for these cards, as they are completely fake and made up randomly.
A valid credit card number (also known as Primary Account Number - PAN) has several fields and each of them has a meaning.
For the technically inclined, this number complies to the ISO/IEC 7812 numbering standard.
The credit card numbers you generate on this page are completely random.
When we say they are valid, we merely imply that they are a possible combination of characters which will validate when passed through the MOD 10 algorithm.