It's honestly worse. DDMMYYY (the last Y is from a lookup table to know if it's 18YY, 19YY or 20YY). If a person is born before October 2007 you can even do a checksum using the last digits to verify that the number is "correct" (not necessarily in use). And yes, last digit is an even number for women, and uneven for men.
CPR number contains Age and Sex. It's date of birt DD MM YY. Plus four digits where you can read the sex from. I think it's even vs uneven numbers.
It's honestly worse. DDMMYYY (the last Y is from a lookup table to know if it's 18YY, 19YY or 20YY). If a person is born before October 2007 you can even do a checksum using the last digits to verify that the number is "correct" (not necessarily in use). And yes, last digit is an even number for women, and uneven for men.
.. decimal place for interestingly gendered?
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