Prime

Prime is a simple puzzle game, where the player must pass a test of mathematical aptitude, in order to fool his robotic captors into thinking he's a robot. The test involves quickly factoring given composite numbers into their prime divisors.

When the number appears, the player must click on a prime divisor in order to divide the composite number by this divisor. This is repeated until the number is completely decomposed into primes. Each number must be factored within a time limit. Running out of time or clicking a wrong number means game over.

There are three difficulty levels available, differing in the time limit available and the size of the composite numbers.