4 ms·
I don't believe we are that close to running out though, are we? Using the number scheme, this person calculated^1 that (assuming Amex starts issuing 16 digit
by codelitt 11y ago
I don't believe we are that close to running out though, are we?
Using the number scheme, this person calculated^1 that (assuming Amex starts issuing 16 digit cards) there would be 3*10^14 + 10^11 or 4.001e+14 possible combinations.
[1]: https://www.reddit.com/r/theydidthemath/comments/3wj8eb/request_how_many_different_number_combinations/cxwmb7j https://www.reddit.com/r/theydidthemath/comments/3wj8eb/requ...