All movement commands understand the numeric prefix and will behave as expected, hopefully.
Three commands for jumping to groups:
gnus-group-jump-to-group). Killed groups can be jumped to, just like living groups.
nil, all the movement
commands will move to the next group, not the next unread group. Even
the commands that say they move to the next unread group. The default
t, when a summary is
exited, the point in the group buffer is moved to the next unread group.
Otherwise, the point is set to the group just exited. The default is