Graham's number definition from: https://en.wikipedia.org/wiki/Graham%27s_number
Graham's number=G64
Of course the equation could be transformed in $\operatorname{G64}^x=2$, but I don't know how to deal with such great numbers.
PS: it is just a curiosity, it's not a question from ... real world..., so is purely theoretical, with no practical application, as far as I am concerned.
$x$ should be close to 0, but not 0.