Determining No of Primitive roots 

Thank you sir very useful

Nice explanation thank you so much sir

Sir. This method is too long. We have a direct formula.phi(phi(n))gives direct ans.

Very nice teaching sir.

What if during the step of constantly dividng you get a sequence like 2 2 3 3 2 3 2 3 does that become p1=2^2 p2=3^2 p3=2^1 p4=3^1 etc

Thanks allot sir

Good lecturing

But this method is not applicable to calculate primitve root of modulo 7