I thought about something, if the number has been guessed but the guess was cancelled : for exemple it could have been guessed with a post edited or it was the second post or more of that player that day; we don't know that so the players that looked at what numbers have been tried don't guess the winning number and it could be a while before we have a winner
Maybe OP could tell us that the number has never been guessed, even by a "cancelled" guess; we are getting to the last 100 numbers, we should have a winner very soon