LUHN Formula for Validation of Account Number
The steps listed below are required for validation of the PAN (Primary Account Number).
-
Step 1: Double the value of the alternate digits of the PAN beginning with the second digit from the right (the 1st right-hand digit is the check digit).
-
Step 2: Add the individual digits resulting from Step One above to each of the unaffected (unused) digits of the original PAN.
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note
If the result from Step One is a two digit number, add each digit together to obtain a one digit result for Step Two.
- Step 3: The total obtained in Step Two must be a number ending in Zero (10, 20 etc.) for the PAN to be validated.
For Example, to validate the PAN 4062001210012105
4 |
0 |
6 |
2 |
0 |
0 |
1 |
2 |
1 |
0 |
0 |
1 |
2 |
1 |
0 |
5 |
x2 |
|
x2 |
|
x2 |
|
x2 |
|
x2 |
|
x2 |
|
x2 |
|
x2 |
|
8 |
+0 |
+(1+2) |
+2 |
+0 |
+0 |
+2 |
+2 |
+2 |
+0 |
+0 |
+1 |
+4 |
+1 |
+0 |
+5 |