Will humans say the largest prime number before we find the next one?

Question

https://saytheprime.com/

Update 2025-10-22 (PST) (AI summary of creator comment): The market will be extended until a new larger (Mersenne) prime is found, rather than closing on the original close date of 2025-12-31.

Manifold Markets · Answer

Almost certainly not — Manifold Markets prediction market estimates a 5% chance (24 traders, as of Jul 27, 2026).