How much prime numbers can each engine do in 10 seconds? Prime 7 is the best, if you need a prime number finder use it. They are all same code just a bit added or taken away, comments inside tell you about what each engine does differently. Prime 7 is at the soft limit of scratch, harder to make it better. Prime 4, 6, and 7 make it run through less numbers, prime 4 half's it, prime 6 sqr it, and prime 7 only check the prime numbers before the sqr. (Detailed inside.)
Made this for a 6th grade math project.
