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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Excel Facts
Which came first: VisiCalc or Lotus 1-2-3?
Dan Bricklin and Bob Frankston debuted VisiCalc in 1979 as a Visible Calculator. Lotus 1-2-3 debuted in the early 1980's, from Mitch Kapor.
