Quote:
Originally Posted by BrainStone
Do I understand correctly that there are cases that consequently allow it to become 1?

Please. This is a math discussion. Learn to state exactly what you mean.
When you say "consequently", the obvious reply is "consequently to what?".
State mathematically what condition you mean. Math is not "casual English".
Do you not know what "order of an element [in a group]" means? It is a fundamental
concept that you need to learn. And you also need to learn Lagrange's Theorem
if you want to continue further.