Apparently, this user prefers to keep an air of mystery about them.
17 Help me put these enormous numbers in order: googol, googol-plex-bang, googol-stack and so on Dec 19 '11
13 What is the biggest fivedigit $abcde$ number, thats divisible by $bcde$, $cde$, $de$ and $e$? Mar 9 '15
12 Random solving of a Rubik cube . Jan 11
6 A die is rolled 6 times; what is the chance that the first roll is a one or the last roll is a one. Dec 26 '15
5 Ordinal interpretation of Friedman's $n$? Mar 10 '13