Does the Collatz sequence reach 1 for all starting points below 10^100?

Question

https://en.wikipedia.org/wiki/Collatz_conjecture

It has been tested to about 10^21 so far:

https://pcbarina.fit.vutbr.cz/

Update 2025-12-25 (PST) (AI summary of creator comment): This market concerns natural numbers only (positive integers), not negative numbers. Negative numbers are excluded from consideration for this market's resolution.

Manifold Markets · Answer

Very likely — Manifold Markets prediction market estimates a 91% chance (10 traders, as of Jul 31, 2026).