The citizenship number consists of 17 bit code and 1 bit check code. The order from left to right is: 6-digit address code, 8-digit date of birth code, 3-digit serial code and 1 digit check code.
The address code and date of birth code are easy to understand. The serial number indicates the serial number assigned to people born in the same year, the same month and the same day in the area identified by the same address code. Odd numbers of serial codes are assigned to men and even numbers to women.
Extended data:
Resident identity card number
According to People's Republic of China (PRC) national standards? According to GB11643-1999], the citizenship number is a characteristic combination code, which consists of 17 digit digital ontology code and digital check code.
The order from left to right is: six-digit address code, eight-digit date of birth code, three-digit serial code and one-digit check code. The resident identity card of the People's Republic of China is an effective national legal document to prove the personal identity of citizens.
I. Structure and form
1. Number structure
Citizenship number is a characteristic combination code, which consists of 17 bit ontology code and check code. The order from left to right is: six-digit address code, eight-digit date of birth code, three-digit serial code and one-digit check code.
2. Address code
The administrative division code of the county (city, flag, district) where the permanent residence of the coding object is located shall be implemented according to GB/T2260.
3. Date of birth code
Indicates the year, month and day when the coded object was born, which is implemented according to GB/T7408. There is no separator between the year, month and day codes.
4. Sequence code
It refers to the serial number of people born in the same year, month and day in the area identified by the same address code. Odd numbers of serial numbers are assigned to men and even numbers to women.
5. Check code
According to the previous 17 bit code, the check code is calculated according to the check code of ISO 7064: 1983. MOD 1 1-2。
Second, the address code
1, North China: Beijing |1/0000, Tianjin | 120000, Hebei | 130000, Shanxi | 140000, Inner Mongolia Autonomous Region |/.
2. Northeast China:? Liaoning province |2 10000, Jilin province |220000, Heilongjiang province | 230000;
3. East China:? Shanghai |3 10000, Jiangsu |320000, Zhejiang |330000, Anhui |340000, Fujian |350000, Jiangxi |360000, Shandong | 370000;
4. Central China:? Henan Province |4 10000, Hubei Province |420000, Hunan Province | 430000;
5. South China: Guangdong Province |440000, Guangxi Zhuang Autonomous Region |450000, Hainan Province | 460000;
6. Southwest: Sichuan |5 10000, Guizhou |520000, Yunnan |530000, Xizang Autonomous Region |540000, Chongqing | 500000;
7. Northwest:? Shaanxi Province |6 10000, Gansu Province |620000, Qinghai Province |630000, Ningxia Hui Autonomous Region |640000, Xinjiang Uygur Autonomous Region | 650000;
8. Special areas: Taiwan Province Province (886)|7 10000, Hong Kong Special Administrative Region (852)|8 10000, Macao Special Administrative Region (853)|820000.
The digital coding rules of the address code in the ID card number of Chinese mainland residents are as follows:
The first and second digits represent provinces (autonomous regions, municipalities directly under the Central Government and special administrative regions).
The third and fourth representative cities (summary codes of prefecture-level cities, autonomous prefectures, leagues, municipalities directly under the Central Government, municipal districts and counties). Where 0 1-20 and 5 1-70 represent provinces and municipalities directly under the central government; 2 1-50 indicates regions (autonomous prefectures and leagues).
The fifth and sixth representatives represent counties (municipal districts, county-level cities and banners). 0 1- 18 refers to the county-level cities under the jurisdiction of municipal districts or regions (autonomous prefectures and leagues); 2 1-80 stands for county (flag); 8 1-99 stands for county-level cities directly under the provincial government.
References:
Baidu Encyclopedia-Resident ID Number