Have you ever found the answer to this question: What is a credit card number? Whether you believe it or not, each of those digits is required to complete your transactions. They’re used to verify things like the cardholder’s and issuer’s identities. Hanfincal (hanfincal.com) can assist you in delving deeper into it.
Read more here: https://hanfincal.com/what-is-a-credit-card-number/
