Primes are of the very important to number theory and number theory has a large application public-key cryptography and computer science, how odd is this, that in this time there is not even one prime "Total reputation" in Crypto SE.
I'm not really sure what you mean – the number of users with 100,000 or more reputation is 2, which is a prime. An odd one, since it is even, but a prime nonetheless. The left column contains numbers (actually, intervals) which largely match privilege levels and those use 'nice' round decimal numbers since Stack Exchange users are familiar with them from daily life.
- you're always looking at a snapshot from last Sunday morning
- SQL Server doesn't have a built-in function for primes
This is how the reputation distribution on Cryptography Stack Exchange looks like (when viewed on a log-log scale):