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MasterCard credit card number validation
All credit card numbers issued by MasterCard must start with 51 through 55 and have 16 digits. For example, 5271190242643112 is a valid MasterCard credit card number.
How to write a single regular expression to validate a MasterCard credit card number described above?
✍: FYIcenter.com
Here is the regular expression for MasterCard credit card number validation:
^5[1-5][0-9]{14}$
^ - begin of the string
5 - matches 5 itself
[1-5] - 1, 2, 3, 4, or 5
[0-9] - any decimal digit
{14} - repeating 14 times
$ - end of the string
2013-01-22, 0👍, 0💬
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