>>tromp+(OP)
I have no idea offhand how this compares to any of those, but my try would be 0xf090a8802dcf8900, which when interpreted as a UTF-8 encoded C style string is ๐ก-ฯ, which is the supremum of the set {Aโ, Aโ, Aโ, ...} (Pretend all those 'A's are '๐ก's, because I couldn't figure out how to get a subscript to the right of an ๐ก. The ๐ก symbol is from a right-to-left alphabet and whenever I'd try to add a subscript it would get moved to the left!).
If ๐ก-ฯ is too cheesy, my try would be 0xf090a880e2828900, which is ๐ก subscript 9.