I'm asking if question 455497 could be undeleted. It was about multiplicative persistence. Even if the question itself was not that well-prepared, it was a valid question about research (at some level anyway -- if you are willing to entertain the notion that recreational mathematics can count as research -- which may be debatable).
Down the drain with the question went my answer, where I offered advice to the OP about what to do in such situations. Now this is of course only my humble opinion, but I thought that advice was not worthless to other readers either. Apparently a moderator had another opinion.