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That's really low.
I often do 5 steps in, 5 steps out on an easy paced run. Sometimes 6in/out if I'm concentrating on slowing my breathing (which I only do as a "how little can I breathe and still run" sort of game, and not any specific training reason). I'm generally at about 180spm - 15 breaths per minute at the extreme but I really do have to keep the effort low before the air hunger kicks in!
At a cadence of 180spm that's ~23 breaths per minute. That's really low.
According to my Garmin stats I'm doing my easy running at the moment at ~33 breaths per minute, which at my cadence around 165 that's a neat 5 steps per breath. So that's likely 2-in and 3-out (I don't consciously count it so this may be wrong).
Nose breathing only is also a way to limit pace.