That has to be the understatement of the year. There are on the order of 2^265 atoms in the universe. Even if every single one of them was a CPU, capable of testing tokens at a rate of 1Thz, thus giving you an aggregate rate of 2^300/s you'd still need the age of the universe times 2^3738 to check them all.
Hitting one by accident won't happen, for the same reason. Now, weaknesses in the algorithm is an entirely different kettle of fish.