481

481 is a founder of The Errors and the first/current leader of them. Additionally, 481 is the first and only number to ever be affiliated with two different families of 100.

Key Facts about the number
Only 2 factors (other than 1 and itself) are 13 and 37. Therefore 481 is the only e1337 3 digit number. This also makes 481 a semiprime, as 13 and 37 are both prime numbers.