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Math Help - HElp with primitive roots (Urgent)

  1. #1
    Junior Member
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    Aug 2007
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    HElp with primitive roots (Urgent)

    Why can 25 not be a primitive root mod 620351. Assuming 620351 is prime???

    I dont understand how to do this without doing any explicit calculations

    if phi of 620351 is 620350, then how can i show the order of a number smaller than that is congruent to modulo 620351???

    HELP!!

    thanks
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  2. #2
    Junior Member
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    hellpppp

    please
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