The number one million can be presented by 2 digits : 1000000, i.e. a chain of 7 digits.
Another possibility is 1000². 3 distinct digits, 5 characters. I

You are requested to express one million, using a single digit d plus some operators creating a chain of n characters ( digits and operators).
What digit is your choice and how low is the minimal n?

a). The permissible operators are : + - * / and ^.

b). Sqrt and ! are allowed as well.”

. REM: count digits and operators only, ignore ^, concatenation and brackets; e.g. (77-7)/7 is counted as 6.

(In reply to 3 w/ [8] by Steven Lord)

No need to include whatever !n means.  It's not on the list a) or b) but you don't need it anyway. 

Posted by Jer on 2020-12-04 20:55:17