Which number does the social security number refer to?

In the middle of the social security card is the social security number.

There are three numbers on the front of the social security card, namely the social security number (i.e. the cardholder's ID number), the social security card number (i.e. the social security card number) and the social security card financial account number. On the front of the social security card, a set of English letters followed by numbers is the social security card number.

The state establishes a national unified personal social security number. Personal social security number is a citizen's identity number.