OFFSET
1,1
COMMENTS
The only operations allowed are addition, subtraction, multiplication, division, exponentiation, parenthesizing, and concatenation.
LINKS
Walter Robinson, Python Program
EXAMPLE
For k = 3125, k can be represented as 5^5, using only 2 digits, which is less than the length of k, 4.
For k = 3437, k can be represented as (7^3)||7, using only 3 digits which is less than the length of k, 4.
For k = 10003, k can be represented as ((1||0)^3)||3, using only 4 digits, which is less than the length of k, 5.
PROG
(Python) # See Robinson link.
CROSSREFS
KEYWORD
nonn,base
AUTHOR
Valentin Miakinen, Walter Robinson, Sep 20 2023
STATUS
approved