How many digits is the social security card number?

According to Xiao Ai Encyclopedia, the number of social security card is *** 18 digits, which consists of numbers and letters. Among them, the first 6 digits are the regional administrative division code, the 7th-14 digit is the personal number, the 5th-17 digit is the check code, and the 8th digit is the card version number. The social security card number is the only identification issued by the social security department to each insured person in the process of handling the social security card. Through the social security card number, the social security department can query the personal information and social security payment of the insured in the system. At the same time, the social security card number is also one of the important documents of the insured in social security-related affairs.