Does the social security card number start with C?

Measures of the People's Republic of China for the Administration of Social Security Cards Article 2 The social security cards mentioned in these Measures refer to integrated circuit cards issued to the public and mainly used for government social management and public services in the fields of human resources and social security. Social security card is a electronic certificate for cardholders to enjoy the rights and interests of social security and public employment services. It has the basic functions of information recording, information inquiry and business handling.