Forgot password? New user? Sign up

Existing user? Log in

Find the number of integers $n$ such that $1 < n \leq 1000$ and $2^{2^n} \equiv 1 \pmod{2^n-1}.$

Note: Even though I made this problem myself, it turns out that a similar problem has already been posed somewhere in USAJMO.

Problem Loading...

Note Loading...

Set Loading...