A Lot of Special Numbers

I'm not much for math, but there is a lot of interesting stuff in there. This list compiles a ton of numbers and describes unique characteristics about each one. It goes from 1 to 9999. Some interesting examples:

9999 is a Kaprekar Number (a number that when squared and then the digits in the squared number are added together equal the original number)

7928 is a Friedman Number (a positive integer which can be written in some non-trivial way using its own digits, together with the symbols + - x / ^ ( ) and concatenation. For example, 25 = 5² and 126 = 21 * 6.)

2 is the only even prime number.

there is seriously some trippy math stuff in here. I can't believe someone took the time to do this.