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Prime Num Question

Atlantic
in Analysis and Calculus

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GOT testing equstion for NORMAL prime numbers

 

(f)x = |cos^2pi multiply by (x-1)!+1 / x

 

Where x is the number you are testing, as far as I know this works for positive prime numbers (Not Mersenne).

I am having a little trouble following the variables in your equations. It would be very helpful if you could lable them for me.

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