int_from_prime_division

Re-composes a prime factorization and returns the product.

Parameters

pd

Array of pairs of integers. The each internal pair consists of a prime number â a prime factor â and a natural number â an exponent.

Example

For [[p_1, e_1], [p_2, e_2], ...., [p_n, e_n]], it returns:

p_1**e_1 * p_2**e_2 * .... * p_n**e_n.

Prime.int_from_prime_division([[2,2], [3,1]])  #=> 12