Do you know the national code algorithm?

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With this program you can be sure of the accuracy of the national code.

Perfect for those who deal with national documents.

National Code include:

 10-digit from the left three digit city code on the birth certificate, the next six digit unique code for a certificate holder in the city of issuance or last digit is a check digit on the left is obtained 9.

Check digit calculation:

To calculate the control of the other figures, each figure has multiplied in the position we achieved together. The resulting sum is divided by 11.
If the residual is less than 2, the control must remain equal, otherwise the control should be left to minus eleven.