This standard specifies the encoding objects, number structure and representation form of citizen identity numbers, so that each encoding object obtains a unique and unchanging legal number. GB 11643-1999 Citizen Identity Number GB11643-1999 Standard Download Decompression Password: www.bzxz.net
This standard specifies the encoding objects, number structure and representation form of citizen identity numbers, so that each encoding object obtains a unique and unchanging legal number.

GB11643—1999
This standard is a revised version of GB11643--1989 "Social Security Number". In order to adapt the content of the standard to the needs of my country's national economic and social development, the following changes have been made to the original standard content: · The original standard name "Social Security Number" was renamed "Citizen Identity Number". · The referenced international standards were added.
· Chapter 3 "Definitions" was added.
: In terms of the structure and representation of the number, the date of birth was changed from six digits to eight digits, of which the year was represented by four digits; the provisions for using specific numbers to represent centenarians in the sequential code were cancelled. , The address code was changed to the administrative division code of the county (city, banner, district) where the coding object's permanent residence is located. · The verification formula and verification code calculation method are given. · The original standard "Appendix A Social Security Number Example (Reference)" was changed to "Appendix A (Suggested Appendix) Citizen Identity Number Example"; "Appendix B (Suggested Appendix) Verification Code Character Value Calculation Method Example" was added. This standard shall replace GB11643-1989 from the date of implementation. This standard is proposed by the State Administration of Quality and Technical Supervision. This standard is under the jurisdiction of the China Institute of Standardization and Information Classification and Coding. The main drafting units of this standard are: China Institute of Standardization and Information Classification and Coding, Household Registration Bureau of the Ministry of Public Security, Computer Management and Supervision Department of the Ministry of Public Security, and Science and Technology Department of the Ministry of Public Security.
Participating drafting units: National Development and Reform Commission, Ministry of Labor and Social Security, Ministry of Personnel, Ministry of Health, Ministry of Civil Affairs, Information Center of the State Administration of Industry and Commerce, Information Center of the State Administration of Taxation, China Disabled Persons' Federation, and Population and Employment Statistics Department of the National Bureau of Statistics. This standard is entrusted to the China Institute of Standardization and Information Classification and Coding and the Technical Supervision Committee of the Ministry of Public Security for interpretation. 195
1 Scope
National Standard of the People's Republic of China
Citizen identification number
Citizen identification numberGB 11643—1999
Replaces GB11643--1989
This standard specifies the coding object, number structure and representation form of the citizen identification number, so that each coding object obtains a unique and unchanged legal number.
2 Referenced standards
The provisions contained in the following standards constitute the provisions of this standard through reference in this standard. When this standard is published, the versions shown are valid. All standards will be revised, and parties using this standard should explore the possibility of using the latest versions of the following standards. GB/T2260-1995 Administrative division code of the People's Republic of China GB/T7408-1994 Data element and exchange format Information exchange date and time representation method
ISO7064:1983 Data processing - check code system Note: The translation of ISO7064:1983 is provided by the China Institute of Standardization and Information Classification and Coding. 3 Definitions
This standard adopts the following definitions.
3.1 Master number
A number that represents a certain characteristic of the coded object. 3.2 Check number
A number attached to the master number to verify the accuracy of the entry or transcription process of the master code. Each master code has only one check code, which is obtained through a specified mathematical relationship. 4 Coding object
The coding object of the citizen identity number is a citizen with the nationality of the People's Republic of China. 5 Number structure and representation
5.1 Number structure
The citizen identity number is a characteristic combination code, consisting of a 17-digit body code and a 1-digit check code. The arrangement order from left to right is: a 6-digit address code, an 8-digit date of birth code, a 3-digit sequence code and a 1-digit check code. 5.1.1 Address code
indicates the administrative division code of the county (city, banner, district) where the coded object is registered, and is implemented in accordance with the provisions of GB/T2260. 5.1.2 Date of birth code
indicates the year, month and day of birth of the coded object, and is implemented in accordance with the provisions of GB/T7408. No separator is used between the year, month and day codes. Example: A person's date of birth is October 26, 1966, and his date of birth code is 19661026. Approved by the State Administration of Quality and Technical Supervision on January 19, 1999, 196
Implemented on July 1, 1999
5.1.3 Sequence code
GB 11643—1999
Indicates the sequence number assigned to people born in the same year, month and day within the area identified by the same address code. Odd numbers in the sequence code are assigned to males, and even numbers are assigned to females. 5.1.4 Check code
The check code adopts ISO7064:1983, MOD11-2 check code system. 5.1.4.1 Verification formula
The character value of the number at each position in the citizen identity number shall satisfy the verification of the following formula: ≥(a, × W)= 1(mod 11)
W:-
represents the position number of the number character from right to left including the check code character; a:- represents the character value of the number at the i-th position; (1)
W:- represents the weighting factor at the i-th position, and its value is calculated according to the formula W:=2-1) (mod 11). Table 1 lists the values ​​of the weighting factors W: at each position in the citizen identity number. Table 1
Weighting factor W at each position in the citizen identity number. Value 18
5.1.4.2 Calculation of check code character value
When i1, W,=2°=1, formula (1) can be expressed as: ai+
(a, × W) = 1(mod 11)
In formula (2), a, is the check code character value, and its value range is 0≤a,≤10; when a1 value is equal to 10, it is represented by Roman numerals ×. 18
The check code character value a that meets the requirements of formula (2) and the value range can be calculated based on αi and, see Table 2.
Check code character value a1 and
(a: XW)(mod 11)
Check code character value al
5.2 Number representation
(a;XW)(mod 1l)Conversion relationship
(a:×W.)(mod 11)Table 6
The characteristic codes of the citizen identity number are connected in sequence without leaving spaces, and its representation is: X×XX××XXXX×××X×X×X
Digit check code
Three-digit sequence code
Eight-digit date of birth code
Six-digit address code
GB11643
Appendix A
(Suggested appendix)
Citizen identity number example
A1 A female citizen born on December 31, 1949 in Chaoyang District, Beijing, has a citizen identity number of: 11010519491231002
The specific meaning of the number is as follows:
Beijing City
Address code
City district
Chaoyang District
Birth period code
Birth year
Birth month
Birth day
Sequence code
Check code
According to Appendix B
Calculation shows
2A male citizen born on January 1, 1880 in Chaoyang County, Shantou City, Guangdong Province, whose citizen identity number is: A2
440524188001010014
The specific meaning of this number is as follows:
Address code
Guangdong Province
Shantou City
Chaoyang County
Date of birth code
Year and month of birth
Appendix B
(Appendix of prompt)
Date of birth
Example of calculation method for check code character value
Sequence code
Check code
According to Appendix B
Calculate
B1 The main body code of the citizen identity number of a female citizen is 11010519491231002. The character value of its check code can be calculated according to the following steps and methods:
Step 1: List the number character values ​​α; at each position corresponding to the main body code and the character position number. Character position number 1
Main body code character value a
Step 2: List the weighting factor value W: corresponding to the character position number i from Table 1. Character position number 1
Weighting factor value W
GB11643-1999
Step 3: Calculate the value of the product α;XW: corresponding to the character position number, character position number!
Step 4: Calculate the sum of the series. wwW.bzxz.Net
2(a:×W)-7+9+0+5+0+20+2+9+24+27+7+18+30+5+0+0+4=16718
Step 5: Calculate the remainder value Z(a, XW.)(mod 11) of ≥(a;×W.) modulo 11.
The sum of the series 167 divided by the quotient 15 modulo 11 has a remainder of 2, that is, 2(a;×w)(mod 11) is 2. When
≥(a;×W.)(mod 11) is 2, the check code character value a1 is X. Step 6: Calculate the check code character value a1. Look up Table 2 When the citizen ID number of the female citizen is 11010519491231002X. B2 The main code of the citizen ID number of a male citizen is 44052418800101001. The check code character value can still be calculated according to the steps and methods of B1 as follows:
Character position:
Number character value a;
Weighting factor value W
(a:×W)=28+36+0+25+16+16+2+8+48+0+0+9+0+5+0+0+2=195195÷11=17
That is, (a:XW)(mod11) is 8.
Looking up Table 2, the check code character value a is 4. The citizen ID number of this male citizen is 440524188001010014.199
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