How to test if g is a primitive root of a prime number p?

A primitive root is an important concept used in both Diffie Hellman Key Exchange (DHKE) and the ElGamal encryption algorithm. Today I will demonstrate how to test if a number g is a valid primitive root of p where p is a prime number.
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[@CitizensCommunity]

How is it 5 years later and it still looks like the first video, like it was all recorded on the same day? Amazing.

[@Nonchalant2023]

I study in a highly renowned university in Europe and my teachers are incapable of teaching this concept in such a simple way. I am amazed and very thankful of discovering your content. Many thanks from Switzerland.

[@kusumguragain4756]

Helpful video

[@sunshine-cb8rq]

Perfect

[@marcosalameh8677]

Perfect!