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    ola_8000 Posts: 0, Reputation: 1
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    #1

    May 6, 2005, 07:19 AM
    congruence and euler function
    :confused:
    hi
    I want to ask 2 questions and please answer me quickly I have quiz in Tuesday

    1.Show that if a is an integer such that a is not divisible by 3 or such that a is divisible by 9 then
    a to the power 7≡ a (mod 63)

    2.About Euler phi function:
    For which positive integers n is Ф(n)| n??
    and thanks a lot
    ola...

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