Atoroidal 3-manifolds (Ex)

Let $M$$<wikitex>; Let $M$ be a closed orientable prime $-manifold whose fundamental group does not contain a copy of $\Z^2$. Is $M$ hyperbolic? </wikitex> [[Category:Exercises]] [[Category:Exercises without solution]]M$ be a closed orientable prime $3$$3$-manifold whose fundamental group does not contain a copy of $\Z^2$$\Z^2$. Is $M$$M$ hyperbolic?