An app inventory-related app made by Colaz. The Kolatz guess is called by various names such as 3n+1 guess, Ulam guess, and hail guess, and is a guess that eventually becomes 1 when all natural numbers are calculated according to the following two conditions. If a number is even, divide it by 2, if it is odd, multiply by 3 and add 1 to repeat that all natural numbers become 1. For example, when 12 is selected, 12→6→3→10→5→16→8→4→2→1 goes through step 9 and becomes 1. In the case of 11, it is 1 in 14 steps from 11→34→17→52→26→13→40→20→10→5→16→8→4→2→1. Because the number is small, the process is small, and the number is not large, so it is difficult to guess the Kolasz. Mathematicians tried to use computers to examine each one, and confirmed that everything is now up to 268.
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