Random next numbering

[cool_puri]

[shocked]
Hi all,

Could you pl. tell me the mysterious reason for the random increment in next numbering whwn thw check digit is ticked.

Thanks

 

[wojcik]

It may look random but isn't once check digits are understood. I have supplied a copy of the address book numbers that have been assigned in our database. They are:

01107598
01107601
01107619
01107627
01107635
01107643

If you ignore the rightmost digit altogether the numbers are:

0110759
0110760
0110761
0110762
0110763
0110764

The rightmost digit is caculated by the system and helps minimise key stroke errors during data entry.

 

[dschnittler]

For those interested. The check-digit is composed using a math algorithm called MODULO 11.
Too complicated to explain but could be looked up in any 'better' maths book.
Regards, Dieter.