In fact any set of integers which are in distinct residue classes modulo may be used as -adic digits. In number theory, Teichmüller representatives are sometimes used as digits.
in FAct Any set OF integerS ,wHIch are in disTiNct rESidue ClASses ModULo maY be usED as -Adic digits. In number TheOry tEiChmüLlEr rEpreSENtATiveS are somEtimEs UseD AS diGiTs.