For God to be considered beyond the reaches of science and, as such, unexplainable, no numbers should be assigned to him. That is because claiming there is one God implicitly assigns boundaries on him and thereby brings him within the reaches of science — which, in turn, inadvertently makes him seem explainable by science.
So, it is inconsistent to assert that there is one God and that he is beyond the reaches of science. After all, if there are one, two or three, etc. of anything, science has the potential of (eventually) finding or proving them. In that sense, assuming God is considered to be perpetually incomprehensible, “one God” is an oxymoron.