<?php
/*
The first two consecutive numbers to have two distinct prime factors are:
14 = 2 * 7
15 = 3 * 5


The first three consecutive numbers to have three distinct prime factors are:

644 = 2^2 * 7 * 23
645 = 3 * 5 * 43
646 = 2 * 17 * 19

Find the first four consecutive integers to have four distinct prime factors each. What is the first of these numbers?
*/

