Integer complexity

Integer complexity is a concept in number theory that refers to the minimum number of ones needed to express a positive integer \( n \) using just addition, multiplication, and parentheses. The complexity of an integer is denoted as \( C(n) \). For example: - The integer \( 1 \) has a complexity of \( C(1) = 1 \) because it can be represented as simply using one "1".