Not sure how you managed to get this shortcut calculation, but it is one I've been studying for years now also, as the ratio 770/441 = 1.746031746 etc. It has remarkable properties as a unit length as you mention, but other mysteries surround it as well. John Michell wrote about the number of Fusion as 1746 many yrs. ago, but never gave a pragmatic insight into it's functional significance. I mentioned it a few times in one of my topics last year also, as a Vesica derivative value.