3.I.1E

(i) Give an example of an integral domain that is not a unique factorization domain.

(ii) For which integers $n$ is $\mathbb{Z} / n \mathbb{Z}$ an integral domain?

*Typos? Please submit corrections to this page on GitHub.*

3.I.1E

(i) Give an example of an integral domain that is not a unique factorization domain.

(ii) For which integers $n$ is $\mathbb{Z} / n \mathbb{Z}$ an integral domain?