**Exercise 1.**
This program returns the \(n\)-th cyclotomic polymomial, where $n$ is a product of distince primes. Enter several choices for \(n\) and the program would return \(\phi_n(x)\) .

Please enter \(n\) then click the button. Notice that \(n=p_1p_2 \cdots p_t\), where \(p_i\) are primes and \(p_i \neq p_j\).