Are You A Prime Number

Question

I\'ve been interested in the problem of finding a better prime number recognizer for years. I realize this is a huge area of academic research and study - my interest in this i

Answer 1

The time complexity of your program is O(n*m^0.5). With n the number of primes in the input. And m the size of the biggest prime in the input, or MAX_INT if you prefer. So complexity could also be written as O(n) with n the number of primes to check.

With Big-O, n is (usually) the size of the input, in your case that would be the number of primes to check. If I make this list twice as big (for example duplicating it), it would take (+-) exactly twice as long, thus O(n).