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Math Help - Primitive Roots

  1. #1
    willowman007
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    Smile Primitive Roots

    If anyone could provide a proof or some examples to the following that would be great!
    Here's the question:

    Is it possible to have a number n such that 9 is a primitive root modulo n? Explain. (n is an integer).
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  2. #2
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    Quote Originally Posted by willowman007 View Post
    If anyone could provide a proof or some examples to the following that would be great!
    Here's the question:

    Is it possible to have a number n such that 9 is a primitive root modulo n? Explain. (n is an integer).
    No, it is a perfect square.
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