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I noticed that multiplication of all primitive roots modulo p ,p>3,

congruent to 1 modulo p...

I have tried some examples (13,17,19...) but i couldn't prove the general case

(let g1....gk be primitive roots modulo p,p>3 ==> g1*g2*...*gk=1(p))

I need help to prove or disprove it...

thanks in advance

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# Multiplication of primitive roots

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