Moser's number, often abbreviated to just Moser, is equal to 2 inside a mega-gon, where Steinhaus-Moser Notation is used or M(2,M(2,3)-2) or M(2,Mega-2) in Hyper-Moser notation. Formally: \begin{eqnarray*} S_3(n) &=& n^n \\ S_{k + 1}(n) &=& S_k^n(n) \\ ext{Moser} &=& S_{S_5(2)}(2) \\ \end{eqnarray*} The last four digits of a Moser are ...1056. Matt Hudelson incorrectly defines a Moser as 2 inside a "Mega + 2"-gon, using his own slightly different version of Steinhaus-Moser Notation.