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As I said, in this case the isPrime function wouldn't even be used. Sometimes, in a project that would grow, I would actually add it even if I don't use it directly just for completeness and future...

Well, theoretically it IS less efficient... Pushing the parameters, calling... Pfew, that's gotta be at least 3 clock cycles ;-). (Actually, I bet it's a bit more, but still very little)

I...

The "usual" method for finding out whether an integer is a prime number is to test all divisors (from low to high) until it finds one. If you split the test whether it is a prime and finding the...

Please don't, that's horribly inefficient. Because, probably, you need to find the lowest divisor to find out whether the number is a prime number. Probably, there should be one function,...