Did you know? Height of the US Presidents' heads carved into Mount Rushmore (18 m) is 250 x Width of an iPhone 13 Pro (71.5 mm)
Pop. of Monaco (2023) (31,600)
/fact/population-of-monaco
Link
If this was a standard unit ...
Yes, there's now a book based on these numbers. Oxford University Press: July 2018.
Click here to learn more about it.
Click here for Podcast: Andrew Elliott interviewed for New Books Network.