Source authenticated

Erdős Problem #469

Does the sum of the reciprocals of all primitive pseudoperfect numbers converge?

Exact FrontierDelta

Prior state unknown→proved

Scope and record

Occurred: Jul 21, 2026

Delta type: SOURCE CLAIM

Assumptions: VibeMathed verification: lean-verified. Publication: announcement. AI contribution: ai-co-developed. Imported under CC BY 4.0.

Canonical aliases: Erdős Problem #469 · Erdős #469 · Problem 469

Confidence: Not scored

Registry verification: lean verified · announcement · resolved

Attribution

VibeMathed
registry · event recorded by

Zachary J. Lewis
human · human collaborator

GPT-5.6 Sol Ultra
model · ai model contributor · OpenAI / Anthropic

Claude Fable 5
model · ai model contributor · OpenAI / Anthropic

Lineage and corrections

This event attributed to Zachary J. Lewis

This event attributed to Claude Fable 5

This event attributed to GPT-5.6 Sol Ultra

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