I'll re-watch to get the jist, but when I heard the end I understood it to be that was Q talking to him and manipulating Gematria to do it. (Gematria would be a cool way to transmit codes, if you control the results. As in, look up this thing on this day and check line 4 and that's your code.) And he did have one day where he used both the 43 and the 25 and both were part of the same proof. Time will tell.