> There are an infinite number of composite numbers. > Proof: Assume there are a finite number of composites. Multiply them all together and don't add one. Since 4 and 6 are composite, this is a larger composite.
@flawr I think my rule of thumb is going to be "Are they getting posted somewhat frequently, and are they getting feedback?". If you post a couple more, and people seem interested, then I'd be more than happy to add it