User blog comment:Pellucidar12/New wiki category/list?/@comment-2033667-20161111054115/@comment-1605058-20161111210931

XKCD number and little foot were not defined with being the largest number ever in mind. There is no evidence, as far as I know, that asankhyeya and muryoutaisuu were meant to be the largest numbers ever. Ballium's number was definitely not a serious attempt, and I doubt its real creator has really considered it to be the largest.