What is the card number of Xi 'an Bank?

Debit card 19 digits, credit card 16 digits. Generally, the bank card number is 16 or 19, the first six digits are the issuer's identification code, the middle digit is the personal account number identification, which generally consists of 6- 12 digits, and the last digit is the check digit. The last digit of a credit card or debit card is calculated by Luhn algorithm, and the number on each bank card has different meanings.