Press the flag. That's it. Watch the numbers get crunched and fly by. If you can ever find a number that does not come up to one, submit it to math authorities.
The Collatz Conjecture is an unsolved problem in mathematics: The Collatz conjecture is a conjecture in mathematics that concerns a sequence defined as follows: start with any positive integer n. Then each term is obtained from the previous term as follows: if the previous term is even, the next term is one half the previous term. If the previous term is odd, the next term is 3 times the previous term plus 1. The conjecture is that no matter what value of n, the sequence will always reach 1. (Wikipedia) So, basically,: 1. Pick any number 2. If the number is even, proceed to step 2a. and if it is odd, proceed to step 2b. 2a. Divide the number by 2. Go back to step 2 and repeat. 2b. Multiply by 3 and then add 1. Go back to step 2 and repeat.