# Math Help - incongruent integers

1. ## incongruent integers

find all incongruent integers having order 4 modulo 37

2. Originally Posted by mndi1105
find all incongruent integers having order 4 modulo 37
Notice that $2$ is a primitive root. Therefore, $2^{(37-1)/4} = 2^9$ has order $4$. But that means $2^9, (2^9)^3$ all have order 4.