Credit card number generator generates haphazard card numbers for MasterCard, VISA 16 digit, VISA 13 digit, American Express, Discover and Voyager. Generated numbers are functional for testing e-commerce sites and payment gateway software solutions.

Out of the 16 digits on a credit card, first 6 digits are acknowledged as the Issue Identifier Number and the last digit is identified as the Check Digit which is required to satisfy Luhn conditions. The remaining 9 digits add up to the Account Number. Since one billion permutations can be fashioned using 9 digits, a large number of users can be accommodated with Credit card generator.

All numbers generated using credit card generator are not legitimated. In order to verify that a credit card number is valid, it must submit you to a check called Luhn Check. In this we first double the value of odd placed digits. If doubling a digit produces a two digit number, then again add the two digits to get a single digit number. Then replace each of the digits with the corresponding digits in the odd place. Finally add up all the digits. This summation must be divisible by 10 if the credit card number is valid.

Amex issues credit cards with 15 digits. Here the account number is 8 digits long. The above check verifies only the mathematical validity of a credit card. Supplementary factors like the expiry date, card security code and account details must also be taken into consideration. Virtual credit card numbers may also be generated with credit card generator using this scheme which usually last for 3-4 days.

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