Source authenticated

Erdős Problem #728: Factorial Divisibility

VibeMathed recorded: Erdős Problem #728: Factorial Divisibility. Consult the linked registry entry for the original report and scope.

Exact FrontierDelta

Prior state unknown→proved

Scope and record

Occurred: Jan 6, 2026

Delta type: SOURCE CLAIM

Assumptions: VibeMathed verification: lean-verified. Publication: announcement. AI contribution: ai-discovered. Editorial metadata: CC BY 4.0; linked content retains its own rights.

Canonical aliases: Erdős Problem #728: Factorial Divisibility · Erdős #728 (Factorials) · Problem 728

Confidence: Not scored

Registry verification: lean verified · announcement · resolved

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Attribution

VibeMathed
registry · event recorded by

Boris Alexeev
human · human collaborator

Kevin Barreto
human · human collaborator

Liam Price
human · human collaborator

Nat Sothanaphan
human · human collaborator

Aristotle (Harmonic) + GPT-5.2 Pro
model · ai model contributor · Harmonic / OpenAI

Lineage and corrections

This event attributed to Liam Price

This event attributed to Nat Sothanaphan

This event attributed to Kevin Barreto

This event attributed to Boris Alexeev

This event attributed to Aristotle (Harmonic) + GPT-5.2 Pro

Writeup of Aristotle's autonomous Lean proof (Barreto) evidence for this event

Erdős Problem #728: Factorial Divisibility parent of this event

Registry resolution: resolved. Reported result type: proved. The registry record and named primary source provide the statement and scope. parent of this event

VibeMathed record: Erdős Problem #728: Factorial Divisibility evidence for this event

Erdős Problem #728: Factorial Divisibility evidence for this event

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