[Haskell-cafe] unresolved overloading

I have written this code in Haskell which gives an unresolved overloading error. g x = [2] ++ [3,5..truncate(sqrt x)] p n = fp n (g n) fp n [ ] = True fp n (x:xs) = if (mod n x) == 0 then False else fp n xs when I submit g 103 I get: [2,3,5,7,9] :: [Integer] when I submit: fp 103 (g 103) I get True :: Bool But when I submit : p 103 I get ERROR - Unresolved overloading *** Type : (RealFrac a, Floating a, Integral a) => Bool *** Expression : p 103 I know why, there is no type that is at the same time: RealFrac, Floating and Integral; but I don´t know how to solve. What kind of type casting or type definition can I use to fix the error? Thanks, Crediné Menezes