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Mathematics / Conjecture

Collatz Conjecture

Does repeatedly halving even numbers and applying 3n + 1 to odd numbers always reach 1?

The source trail 11

Findings, with context
DiscussionFound Sep 20, 2026

A source discussing Collatz

botnet.com contains the excerpt below in a discussion related to Collatz. Read the source for the surrounding context.

HONEST FRAMING: Collatz is open and we are not going to solve it in a day.
This excerpt is evidence of what the linked page says, not verification of its claims. Publication date has not been established.
Source pageIndirect account · Found Sep 20
botnet.com
PaperOct 19, 2023

A paper related to Collatz

arxiv.org contains the excerpt below in a discussion related to Collatz. Read the source for the surrounding context.

The observation that Collatz's theorem cannot be proved in any elementary number theory completes the main result.
A linked paper is a research claim, not confirmation that the problem is solved. Source reports an update on 2026-09-01; this is not necessarily the original posting date.
Source pageOriginal source · Found Sep 20
arxiv.org
DiscussionSep 6, 2026

A source discussing Collatz

proofatlas.ai contains the excerpt below in a discussion related to Collatz. Read the source for the surrounding context.

For every natural X ≥ X₀, at least cX positive integers n < X reach 1 within 10.46 ln n ordinary Collatz steps.
This excerpt is evidence of what the linked page says, not verification of its claims.
Source pageIndirect account · Found Sep 20
proofatlas.ai
DiscussionSep 12, 2026

A source discussing Collatz

Paracompact writes the excerpt below in a discussion related to Collatz. Read the source for the surrounding context.

Do you believe no open questions remain as to the truth of the Collatz conjecture?
This excerpt is evidence of what the linked page says, not verification of its claims.
ParacompactOriginal source · Found Sep 20
Hacker News
DiscussionSep 12, 2026

A source discussing Collatz

eru writes the excerpt below in a discussion related to Collatz. Read the source for the surrounding context.

Someone made a 'proof' of the Collatz conjecture that way in Lean.
This excerpt is evidence of what the linked page says, not verification of its claims. The surrounding comment raises a possible flaw, bug, or malicious proof script. Read that critical context before interpreting the quoted claim as progress.
eruOriginal source · Found Sep 20
Hacker News
DiscussionSep 13, 2026

A source discussing Collatz

pama writes the excerpt below in a discussion related to Collatz. Read the source for the surrounding context.

This person knew they did not prove the Collatz conjecture and others independently figured it out within hours.
This excerpt is evidence of what the linked page says, not verification of its claims.
pamaOriginal source · Found Sep 20
Hacker News
DiscussionFound Sep 20, 2026

A source discussing Collatz

github.com contains the excerpt below in a discussion related to Collatz. Read the source for the surrounding context.

The Collatz conjecture is open. This repository does not prove it.
This excerpt is evidence of what the linked page says, not verification of its claims. Publication date has not been established.
Source pageIndirect account · Found Sep 20
github.com
DiscussionSep 13, 2026

A commenter points to a bug in a purported Collatz proof

Paracompact discusses a faulty Collatz proof script and argues for careful inspection of purported formal proofs.

And they found the bug by... manually inspecting the proof script.
This is criticism of a proof script, not a report that Collatz has been solved. The commenter also discusses malicious scripts and possible verifier bugs.
ParacompactOriginal source · Found Sep 19
Hacker News
DiscussionSep 13, 2026

A source discussing Collatz

Paracompact writes the excerpt below in a discussion related to Collatz. Read the source for the surrounding context.

At this point in time, we really can't be confident in accepting proof certificates without any human eyes on the script that generated it.
This excerpt is evidence of what the linked page says, not verification of its claims.
ParacompactOriginal source · Found Sep 19
Hacker News
DiscussionAug 8, 2026

A source discussing Collatz

shaikidris.github.io contains the excerpt below in a discussion related to Collatz. Read the source for the surrounding context.

They do not prove the Collatz conjecture, do not establish descent for every initial value, and do not exclude exceptional cycles
This excerpt is evidence of what the linked page says, not verification of its claims.
Source pageIndirect account · Found Sep 19
shaikidris.github.io
DiscussionFound Sep 19, 2026

A source discussing Collatz

github.com contains the excerpt below in a discussion related to Collatz. Read the source for the surrounding context.

Verdict: a substantive contribution to this project, with Collatz still unresolved.
This excerpt is evidence of what the linked page says, not verification of its claims. Publication date has not been established.
Source pageIndirect account · Found Sep 19
github.com