$r$ is a primitive root for the prime $p$
$x_1\equiv r^a \pmod{p}$
$x_2\equiv r^b \pmod{p}$
If $gcd(b, p-1)=1$, how can I determine $r$ if $p$, $x_2$, and $b$ are known?
$r$ is a primitive root for the prime $p$
$x_1\equiv r^a \pmod{p}$
$x_2\equiv r^b \pmod{p}$
If $gcd(b, p-1)=1$, how can I determine $r$ if $p$, $x_2$, and $b$ are known?