There are less prime numbers than I thought. So far I’m the only one whose ID# is a prime. According to the prime number theorem, the percentage of the prime numbers out of the first 1000000 integers is
1 / ln 1000000 ≈ 7.3%
*Edit: 1 / ln(1,000,000) ≈ 7.3%
Among all pro accounts on this list, only one is a prime, 792919, which belongs to Shibano Ryunosuke.