Erdős problem 822 · problems.science

Does the set of integers of the form $n + \varphi(n)$ have positive (lower) density?

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Technical detailsExact roots, source, and retained record identifiers

Problem row: sha256:67aa84338f14a1905911a2e93c73935c812344cf43d8595ebd5fa31ddd787157
Metadata: sha256:11723eaca4f9bcb79b17bf06c7c77791969f3dbd56f336bbd83dbb40f8d5b1aa
Observation: sha256:8c823d621b7e1256c8e47c60a5f1c54c016a5507e6f27b2bab537f6f5f232067
Content: sha256:9ee59a1cd8a7b7e00bcb5bd3d29bc4332fa6ef6e9d2873b7afafd2d6ffcc0bf0

Repository: sha256:a956b84c437202e5a02cc9e036a621bd14a302b34a75758115730bdbb77c52a4
Projection: sha256:c9d14c459c518937e758918b5897dc3b22f1a55f07739afe99502f5b046c907a
Source commit: 2415f78e850aeee50afdca525c6f2e0ea606f207