We prove two main results: (1) For any integers
and
, there is a closed
3-manifold
admitting
a distance-,
genus- Heegaard splitting,
unless
. Furthermore,
can be chosen to be
hyperbolic unless
.
(2) For any integers
and
,
there are infinitely many nonhomeomorphic closed 3-manifolds admitting
distance-,
genus-
Heegaard splittings.