The last digit of some people's ID number is X. do babies know what this x means? Many people are very curious about this number. The small edition of sihai.com will show you some personal information about ID card.
To find out what x means at the end of the ID card, first let's disassemble the ID card number:
The ID card has a total of 18 digits, such as 1120441654120243x. The first six digits' 112044 'are the address code, which refers to the administrative division code of the county (city, flag, district) where the household registration is located. This part is coded according to the administrative division code of the people's Republic of China (GB / t2260).
The first represents the region, 1-north China, 2-northeast, 3-east China, 4-central south, 5-southwest, 6-northwest
The provincial codes are as follows:
11 Beijing, 12 Tianjin, 13 Hebei, 14 Shanxi, 15 Inner Mongolia
21 Liaoning, 22 Jilin, 23 Heilongjiang
31 Shanghai, 32 Jiangsu, 33 Zhejiang, 34 Anhui, 35 Fujian, 36 Jiangxi, 37 Shandong
41 Henan, 42 Hubei, 43 Hunan, 44 Guangdong, 45 Guangxi Zhuang Autonomous Region, 46 Hainan
51 Sichuan, 52 Guizhou, 53 Yunnan, 54 Tibet, 50 Chongqing
61 Shaanxi Province, 62 Gansu Province, 63 Qinghai Province, 64 Ningxia Hui Autonomous Region, 65 Xinjiang Uygur Autonomous Region
71 Taiwan Province
81 Hong Kong SAR
82 Macao SAR
The first 17 bits are called ontology codes, which are determined by personal information. The last bit is called the check code. It may be 0-9 or X. it is derived from a formula.
1. Multiply the first digit of ID card number by 7; the second digit by 9; the third digit by 10; the fourth digit by 5; the fifth digit by 8; the sixth digit by 4; the seventh digit by 2; the eighth digit Multiply the number by 1, the 9th digit by 6, the 10th digit by 3, the 11th digit by 7, the 12th digit by 9, the 13th digit by 10, the 14th digit by 5, the 15th digit by 8 The 16th digit of the ID card number is multiplied by 4; the 17th digit of the ID card number is multiplied by 2.
2. Sum up the result of multiplying 1-17 digits of the first step ID card number.
3. Divide the result calculated in the second step by 11, and there will be 11 possibilities: the remainder is 0, the remainder is 1, the remainder is 2, the remainder is 3, the remainder is 4, the remainder is 5, the remainder is 6, the remainder is 7, the remainder is 8, the remainder is 9, and the remainder is 10. The number of the last ID card corresponding to them is 10 x 9 8 7 6 5 4 3 2. That is to say, if the remainder is 0, then the last bit of ID card is 1. If the remainder is 1, then the last bit of ID card is 0. If it is 2, then the corresponding last bit is X.
Another way of saying is to calculate the result. The remainder is 10, which is a two digit number. In order to ensure that the citizen's ID card meets the national standard, but it can't be expressed by 0-9, because if 10 is used as the tail number, the person's ID card will become 19 digits, and the number of 19 digits violates the national standard, and the computer application system of our country does not recognize the number of 19 digits 。 So replace it with X!!! Then x is 10 of the Roman number.
So, that's not what you said. What's the last one is x, which represents rural household registration? The last one is x, which is beyond family planning? X is from ethnic minorities? Only after the ID card is reissued will there be x? The most amazing thing is that in the future, people will become ox x, so there is x on the ID card... There is also a very scientific saying, he said that according to the chromosome, the male is y, and the female is X. Xiaole said that she has lived such a big life. She has never met the children's shoes with y at the end of her ID card. If I meet her one day, it must be that I am crazy