Introduction to Euler's Totient Function! @MuPrimeMath

Uploaded August 2020 | Updated September 2026, 2 weeks ago

Euler's totient function φ(n) is an important function in number theory. Here we go over the basics of the definition of the totient function as well as the value for prime numbers and powers of prime numbers!

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0:00 Definition and example
1:56 Totient of a prime number
3:30 Totient of power of a prime

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