KnowraMillennium Prize ProblemsLinked fromLinked fromThe 6 pages that link to Millennium Prize Problems, each with the reason it gives.All 6Broader topic 1Related 4Narrower topic 1Bernhard RiemannRelated: The Riemann hypothesis is one of the designated problems.Poincaré conjectureRelated: The conjecture was the first of these problems to be solved, though Perelman declined its prize.Grigori PerelmanRelated: The Poincaré conjecture was one of these problems, though Perelman declined its prize.Yang–Mills existence and mass gapRelated: This challenge is one of the seven problems, with a million-dollar prize for a valid solution.