Brex reports that a business credit card can help separate finances, build credit, and offer rewards, but requires ...

Your credit card account number forms part of your card number, but the two are not the same. Credit card account numbers are often shorter, but they are always completely unique to you.

Credit cards usually have 15 or 16 account numbers. Each digit conveys identifying information about the credit card, and the assigned numbers must follow the guidelines set by the ISO.