By the fundamental theorem of arithmetic, every integer greater than 1 has a unique (up to the order of the factors) factorization into prime numbers, which are those integers which cannot be further factorized into the product of integers greater than one.
By the fundamental theorem of arithmetic every integer greater than 1 has a unique (up to the order of the factors) factorization into prime numbers which are those integers which cannot be further factorized into the product of integers greater than one