Let me clear something: how do you count? Can you multiply 63895 by 12? By 6? By 3? By 10? This is an standard, there have been coltures where the base was 60 and they could multiply 63895 by 60 easily. But now the whole world counts in 10.

I would be happy if that number was 12 but the simple fact that we write in base ten makes it not the case (also mathematically speaking 12 is divided by a square which causes weird things)

There is nothing wrong with 12 but as long as you cannot do 63895*12 easily 10 is better