divisibility

leetcode-368-largest-divisible-subset

Check if a number is divisible by another number

Investigation of structural patterns in natural numbers induced by divisibility over finite sets of initial prime numbers. Defines a discrete invariant, the multiplicitivity μ(n), counting how many fundamental primes from a fixed set divide n, and proves its periodic and specular symmetries.

Small React app demonstrating some shortcuts for testing divisibility of integers.