[cobaltoxide]

That doesn't seem like a good way to generate "random" numbers, since it will only produce numbers with exactly two prime factors.

[amenghra]

Correct. It will almost never produce an even number, so there's already one bit of entropy lost. It will also never produce lots of other numbers.

[nemo8551]

Thanks all, I hadn’t considered that but we do only use it for silly things and nothing work related but it’s worth a consideration.