Eulers’s phi function* of 666 equals 216.
*Euler’s totient function (or Euler’s phi function), denoted as φ(n) or ϕ(n), is an arithmetic function that counts the positive integers less than or equal to n that are relatively prime to n.
NOTHING IS BIGGER THAN IT LOOKS
Eulers’s phi function* of 666 equals 216.
*Euler’s totient function (or Euler’s phi function), denoted as φ(n) or ϕ(n), is an arithmetic function that counts the positive integers less than or equal to n that are relatively prime to n.