Problem:
Show that the gap between two consecutive squarefree numbers can be arbitrary large.
Recall that a number n is called squarefree if it is not divisible by any square > 1. Show that the gap between two consecutive squarefree numbers can be arbitrary large. (Hint: Find a positive integer m such that m is divisible by 22, m + 1 is divisible by 32, m + 2 is divisible by 52, m + 3 is divisible by 72 and so forth.)