I think the extreme inconvenience of 11 being a prime number might force people to choose a more sensible base. 10 is usable (barely), being divisible by 2 and

I think the extreme inconvenience of 11 being a prime number might force people to choose a more sensible base. 10 is usable (barely), being divisible by 2 and 5, but 11 would be ridiculous.