The function prime_factorization is used to calculate online the decomposition of an integer into prime factors.
Any integer greater than or equal to 2 has a unique prime factorization, this function provides this factorization.
The prime factorization is particularly useful to simplify fractions of integer and put them in a simplified form.
The prime factorization is also used to factorize expression involving integers.
prime_factorization(integer)
prime_factorization(`20`), returns {`2^2*5`}