> "More precisely, the order of magnitude of a number can be defined in terms of the common logarithm, usually as the integer part of the logarithm, obtained by truncation."

    $ bc -l
    l(835)/l(10)
    2.92168647548360208478

That would make it 2 orders of magnitude by that method. Happy to accept that it's 3 orders of magnitude by the N=a*10^b method though. Either way, it's definitely not one.

I think the whole point of orders of magnitude is to be a back-of-the-napkin estimation of what's what.

"a new car is an order of magnitude difference in price compared to a used car" is appropriate even if a new car is 40k and a used car is 5k

Electric cars have two orders of magnitude less energy storage than gasoline cars, but newer ones are only one order of magnitude.