EntityQ837314· pop 43· linked from 60 articlesCollatz conjectureSign in to saveconjecture in mathematics that concerns sequencesArticleUnsolved problem in mathematicsFor even numbers, divide by 2; For odd numbers, multiply by 3 and add 1.Read full article (644 paragraphs)ConnectionsparityEntitypower of twoEntityCategoriesArithmetic dynamicsConjecturesInteger sequencesUnsolved problems in number theory