By my math, if you're talking about Denmark, I don't think you're as unique as you think you are. There are a total of about 18 million valid Danish ID numbers

By my math, if you're talking about Denmark, I don't think you're as unique as you think you are. There are a total of about 18 million valid Danish ID numbers (approximately 36.5k valid DDMMYY combinations * approximately 500 valid serials that meet the checksum), of which 204,099 are two twin primes. So I'd expect about 1% of the country to have two twin primes for their ID number. So not only are you probably not the only one in the country to have two twin primes for an ID number, you're probably not the only Dane on Hacker News for whom that's true!