Sunday, 29 November 2015

number theory - Euler's totient function determining phi(m)= 2 using the product formula.

Solving ϕ(m) =2 , to find that the only possible types of m are 3,4, and 6



I have considered the product and found pi = 2 or 3 and ai = 2 or 1 and this I have found using cases 1|2 and 2|2.



How can I use my results combining the two cases that the only possible such m are if 3,4, or 6.



edit: I am considering the case of when m and n are coprime and I know the possible solutions are (3,4) and (4,3) . For self, I am wondering about how I find these m after obtaining my cases 1|2 and 2|2.

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