Are there infinitely many composite Fermat numbers?
Are there infinitely many composite Fermat numbers?
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Fermat numbers are numbers of the form Fₙ = 2^2^n + 1. Fₙ is prime for n=0 through n=4, with F₄ = 65537. No other Fermat primes are known, but it is possible that there are more, even infinitely many. In fact, it is even possible that only finitely many Fermat numbers are composite.
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What is this?
What is Manifold?
Manifold is the world's largest social prediction market.
Get accurate real-time odds on politics, tech, sports, and more.
Win cash prizes for your predictions on our sweepstakes markets! Always free to play. No purchase necessary.
Are our predictions accurate?
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In the 2022 US midterm elections, we outperformed all other prediction market platforms and were in line with FiveThirtyEight’s performance. Many people who don't like trading still use Manifold to get reliable news.
How do I win cash prizes?
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