Yes, I mean the Z distance between the loops.
The number of loops is not important as long as the curve goes around the whole hight of the hexagonal geometry.
But I guess if we can control the distance between each loop, then the number of them can be calculated as well.
If this answer your question,
The definition is designed to always end at the top, although because of the steepness of the short lines, it might not always look like it. I don’t know if you wanted the spiral to end on the same edge it began but you can always play with the divide curve slider to make it do so.