Hey guys i need some help with Luhn check digit formula, i need to make formula for 13 and 14 digits for card number validation, i tried and i search online but it won't help... If someone knows or have the formula please help, it would be much appreciated!!
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Macropod
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I have to wonder what parameters you used to search here for previous threads on this. A simple search for Luhn returns 24 threads. See, for example: https://www.mrexcel.com/forum/excel...hin-excel-build-algorithm.html?highlight=Luhn
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Lock one reference in a formula
Need 1 part of a formula to always point to the same range? use $ signs: $V$2:$Z$99 will always point to V2:Z99, even after copying
