Does the luna algorithm check maps that are 19 digits long?

Question

JavaScript

The Luhn algorithm is an algorithm for calculating the check digit of a plastic card number in accordance with the ISO / IEC 7812 standard
Google and tried several JS scripts to validate bank cards, cards with a length of 16-18 digits are processed without problems, but with a length of 19 - are not tested. Is this algorithm generally intended for such a length? In Google, what is in English, what is in Russian, I did not find the exact information on this question

Answer 1

In Google, what is in English, what is in Russian, I did not find the exact information on this question

First link on google
https://www.nccgroup.trust/us/about-us/newsroom-an...

Good news is that the Luhn algorithm is not limited by the number of digits and can handle checks greater (and smaller) than 16 digits.