Assuming you're talking about splitting your SSN down the middle (two 5 digit numbers) and it looks something like this

http://en.wikipedia.org/wiki/Personal_identification_number_...

The candidates are (unless I horked something up, these are pairs of 5 digit twin primes that start with a sensible 6 digit date and checksum as Danish SSNs)

0212702129 0608706089 2105721059 2210722109

That's assuming you were not born in '90 or '91.