Expression 5: "N" Subscript, "d" "i" "g" "i" "t" "s" , Baseline left parenthesis, "x" , right parenthesis equals floor left parenthesis, log Subscript, 10 , Baseline left parenthesis, "x" , right parenthesis plus 1 , right parenthesisNdigitsx=floorlog10x+1
5
Gets the number of characters required to compute this function to a certain value
6
Expression 7: "f" left parenthesis, "x" , right parenthesis equals "O" Subscript, "v" "e" "r" "h" "e" "a" "d" , Baseline plus Start sum from "n" equals 1 to "x" , end sum, left parenthesis, left parenthesis, "P" Subscript, "e" "r" "n" "u" "m" "b" "e" "r" , Baseline plus "N" Subscript, "d" "i" "g" "i" "t" "s" , Baseline left parenthesis, "n" , right parenthesis , right parenthesis , right parenthesisfx=Overhead+x∑n=1Pernumber+Ndigitsn
7
Expression 8: "f" left parenthesis, "N" , right parenthesis equals 1000000fN
equals=
10000001000000
8
Expression 9: "N" equals 84257N=84257
8420084200
8430084300
9
This is the maximum number of terms that you can get. This formula can work accurately for numbers up to 2^84258-1