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The unified civil number () is a 10-digit unique number assigned to each Bulgarian citizen. It serves as a
national identification number A national identification number or national identity number is used by the governments of many countries as a means of uniquely identifying their citizens or residents for the purposes of work, taxation, government benefits, health care, bank ...
. An EGN is assigned to Bulgarians at birth, or when a
birth certificate A birth certificate is a vital record that documents the Childbirth, birth of a person. The term "birth certificate" can refer to either the original document certifying the circumstances of the birth or to a certified copy of or representation ...
is issued. The ''uniform system for civil registration and administrative service of population'' (; abbreviated: ЕСГРАОН, ''ESGRAON'') regulates the EGN system.


Structure

The initial six digits correspond to the birth date. The first two digits are the last two digits of the year, and the last two digits are the day of the month. For people born between 1900 and 1999 the middle digits are the month number: YYMMDD. For people born before 1900, 20 is added to the month: YY M+20 DD. For people born from 2000, 40 is added to the month: YY M+40 DD. The next three digits designate the birth order number, the third digit being even for males and odd for females. Each district is assigned a range of three-digit numbers, used consecutively, altering even and odd numbers between males and females born on the particular day. In rare cases a district may not have enough numbers, so numbers are "borrowed" from an adjacent district. A
check digit A check digit is a form of redundancy check used for Error detection and correction, error detection on identification numbers, such as bank account numbers, which are used in an application where they will at least sometimes be input manually. It ...
, calculated from the nine digits using the following
algorithm In mathematics and computer science, an algorithm () is a finite sequence of Rigour#Mathematics, mathematically rigorous instructions, typically used to solve a class of specific Computational problem, problems or to perform a computation. Algo ...
, is appended:
1 Each digit is multiplied by its
weight In science and engineering, the weight of an object is a quantity associated with the gravitational force exerted on the object by other objects in its environment, although there is some variation and debate as to the exact definition. Some sta ...
; the weight for the ''n''th digit is 2n modulo 11: :: 2 The products obtained are added
3 The resulting sum
modulo In computing and mathematics, the modulo operation returns the remainder or signed remainder of a division, after one number is divided by another, the latter being called the '' modulus'' of the operation. Given two positive numbers and , mo ...
11 is the check digit. If the result is 10, the check digit becomes 0


Examples


Calculation

The first female registered born on 5 January 1979 has number 79 (1979) 5 (January + 3) 5 (5th) 004 (district has numbers, say, 0-50, and this is first female of this date) & check digit, i.e. 7901050011 & check digit.
5x4 + 0x8 + 1x4 + 0x10 + 2x0 + 1x6 + 2x2 + 8x4 + 6x6 = 36; divide by 11, (quotient is 4, ignore), remainder 8 is check digit. So EGN is 7901050017.


Misuse

In order to easily cross borders criminals have been known to change EGNs. There were 46 such cases detected in March 2005. Using the EGN system for identification raised some privacy concerns, though they are officially considered personal information and are protected by law.


See also

*
National identification number A national identification number or national identity number is used by the governments of many countries as a means of uniquely identifying their citizens or residents for the purposes of work, taxation, government benefits, health care, bank ...
*
Canada Canada is a country in North America. Its Provinces and territories of Canada, ten provinces and three territories extend from the Atlantic Ocean to the Pacific Ocean and northward into the Arctic Ocean, making it the world's List of coun ...
- Social insurance number *
United States The United States of America (USA), also known as the United States (U.S.) or America, is a country primarily located in North America. It is a federal republic of 50 U.S. state, states and a federal capital district, Washington, D.C. The 48 ...
-
Social Security number In the United States, a Social Security number (SSN) is a nine-digit number issued to United States nationality law, U.S. citizens, Permanent residence (United States), permanent residents, and temporary (working) residents under section 205(c)(2 ...
*
United Kingdom The United Kingdom of Great Britain and Northern Ireland, commonly known as the United Kingdom (UK) or Britain, is a country in Northwestern Europe, off the coast of European mainland, the continental mainland. It comprises England, Scotlan ...
- National Insurance number *
Australia Australia, officially the Commonwealth of Australia, is a country comprising mainland Australia, the mainland of the Australia (continent), Australian continent, the island of Tasmania and list of islands of Australia, numerous smaller isl ...
-
Tax file number A tax file number (TFN) is a unique identifier issued by the Australian Taxation Office (ATO) to each taxpaying entity—an individual, company, Pension fund, superannuation fund, partnership, or Trust law, trust. Not all individuals have a TFN, a ...
*
France France, officially the French Republic, is a country located primarily in Western Europe. Overseas France, Its overseas regions and territories include French Guiana in South America, Saint Pierre and Miquelon in the Atlantic Ocean#North Atlan ...
-
INSEE code The INSEE code ( ) is a numerical indexing code used by the Institut national de la statistique et des études économiques (France), French National Institute for Statistics and Economic Studies (INSEE) to identify various entities, including c ...
*
Spain Spain, or the Kingdom of Spain, is a country in Southern Europe, Southern and Western Europe with territories in North Africa. Featuring the Punta de Tarifa, southernmost point of continental Europe, it is the largest country in Southern Eur ...
- NIE Number *
Ireland Ireland (, ; ; Ulster Scots dialect, Ulster-Scots: ) is an island in the North Atlantic Ocean, in Northwestern Europe. Geopolitically, the island is divided between the Republic of Ireland (officially Names of the Irish state, named Irelan ...
- PPS number *
Brazil Brazil, officially the Federative Republic of Brazil, is the largest country in South America. It is the world's List of countries and dependencies by area, fifth-largest country by area and the List of countries and dependencies by population ...
-
Cadastro de Pessoas Físicas The CPF number (', ; Portuguese for "''Physical Persons Register''") is the Brazil, Brazilian individual taxpayer registry, since its creation in 1965. This number is attributed by the Receita Federal do Brasil, Brazilian Federal Revenue to Brazi ...
*
Yugoslavia , common_name = Yugoslavia , life_span = 1918–19921941–1945: World War II in Yugoslavia#Axis invasion and dismemberment of Yugoslavia, Axis occupation , p1 = Kingdom of SerbiaSerbia , flag_p ...
- Unique Master Citizen Number * Citizenship of the European Union * Bulgarian passport * Bulgarian identity card * Bulgarian nationality law * Driving licence in Bulgaria


External links


A paper, ''Integrated Information System for Demographic Statistics 'ESGRAON-TDS' in Bulgaria''
{{DEFAULTSORT:Uniform Civil Number Law of Bulgaria National identification numbers