1,001 = 91 x 11
2145
22
231
The number 1111115
99.... 9 times 11
2145
231
22
The number 1111115
231
swift code is normally of 11 digits. first four digits pertains to bank name, next two digits to country, remaining pertains to branch code.
99.... 9 times 11
11 x 9 = 99 two digits
15 digits (the first four digits is the branch code)
The first common multiple of 11 and 12 is 132
77
You need to add all the digits at odd positions, and subtract all the digits at even positions (counting positions from the right). For example, for the number 143, you calculate: +3 + 1 - 4 = 0.If you get a multiple of 11 (including 0), as in the example above, you have a multiple of 11.