Prime numbers.
The products of a square of a prime and a prime, like 12.
The prime factors of 75 are 3 and 5: 3 x 5 = 15
As a product of its prime factors it is: 223*3 = 36
The factors of 13 are 1 and 13. There are an infinite number of products that can be created with the number 13.
We are sometimes asked to rewrite a composite number as a product of its prime factorization. That's redundant, since a prime factorization is a product by definition. The (product of the) prime factorization of 36 is 2 x 2 x 3 x 3.
To write a composite whole number as the product of its prime factors is to write its prime factorization.
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It is: 2*2*5*7 = 140
2 x 3 x 7
Prime factorizations are expressions of numbers as products of prime factors. The prime factorization of 30 is 2 x 3 x 5.
As a product of its prime factors: 2*5*563 = 5630