But the same argument applies to the original "illegal prime" under discussion. Your original comment indicated that you considered the case of an image to be different and you asked how a prime could represent an image.

In fact, I'd go as far as saying that you could apply your argument to any data stored on a computer. But someone I don't think a judge would be impressed by "there re infinity many things the data in this file could represent and only under one mapping is it an indecent image".