Mostly, they are just an account number. Some of the digits, however, are "check digits." That is, they come from some mathematical formula being appled to some of the other digits. That makes it near impossible to simply make up a string of 16 digits that are a valid credit card number. Of course, the location of the check digits and the formula which generates them are carefully guarded secrets.
Technically zero, as there are no numbers in the word "credit card". Otherwise, Visa, Discover, MasterCard, nearly all major companies have 16 digits. American Express on the other hand, have 15 digits.
A credit card number is normally 16 digits in 4 groups of 4 eg: 1234 5678 8765 4321 There may also be additional numbers as added security on the reverse side, usually 3 or 5 digits
A credit card number starting with 4775 is likely a Visa card. Visa cards typically start with the number 4 and have 16 digits in total. The first six digits of a credit card number are known as the Bank Identification Number (BIN) and can be used to identify the issuing bank or financial institution. It is important to note that the first six digits alone do not provide complete information about the specific type of credit card or its features.
There are 2 sets of numbers on a credit or charge card. The card number is usually 16 digits long and on the front of the card. The CVV number is usually on the back of the card and 3 digits long. American Express cards have a 4 digital cvv code on the right hand side of the front of the card.
The structure of the card number varies by system. For example, American Express card numbers start with 37; Carte Blanche and Diners Club with 38.American Express - Digits three and four are type and currency, digits five through 11 are the account number, digits 12 through 14 are the card number within the account and digit 15 is a check digit.Visa - Digits two through six are the bank number, digits seven through 12 or seven through 15 are the account number and digit 13 or 16 is a check digit.MasterCard - Digits two and three, two through four, two through five or two through six are the bank number (depending on whether digit two is a 1, 2, 3 or other). The digits after the bank number up through digit 15 are the account number, and digit 16 is a check digit.
there are 16 digits on a visa card
16 digits.
There is only one card number in a visa debit card. It has 16 digits
16
Visa cards start with digital "4" and have a total of 16 digits Mustard's also contain a total of 16 digits but start with digital "51","52
starts with a 4 and it has 16 digits
It depends on the credit card. Visa and Mastercard both have 16 digits. American Express has 15.
It's the long number (16 digits) printed accross the centre of the card.
It would depend on the Credit Card type. Visa, Mastercard, and Discover are 16 digits American Express is 15 digits Diners Club is 14 digits
"There are several ways to tell if a credit card number is a Visa card number or not. First, Visa numbers always start with the number 4. They are also usually 13 or 16 digits in length."
Visa begins with 4 16 digits Master " " 5 " Discover " " 6 " Amex " " 3 15 digits
A Visa and/or Mastercard will most likely have 16 digits. Most Visa's start with the number '4' and Mastercards with the number '5'. Gas cards, department store cards, debit cards can have anywhere from 7 digits to 16 digits.