Faster than LL?
Please tell me if this is pretty obvious.
I noticed that any composite number over 3 could have two primes added up to equal it.
For example:
You want to check if 11 is prime. You go down to the next highest prime, 7. 7+2=9, 7+3=10. Any higher would make what it equals higher. You go down to 5 and find you can't add anything to make it up to 11. Therefore, it is prime.
Tell me how you like it. It seemed pretty simple so I don't think it will actually beat LL.
