That's pretty funny. Though what I think they're saying is that the total size of the result-space for their planet generating algorithm is, whatever, hundreds

That's pretty funny. Though what I think they're saying is that the total size of the result-space for their planet generating algorithm is, whatever, hundreds of quadrillions or quintillions or whatever it is that makes that work out, but that a given instance of the universe comprises tens of millions of planets.