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Lehmer's totient problem

unsolved problem in mathematics
Place conjecture Q3406228
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Lehmer's totient problem

Summary

Lehmer's totient problem is a conjecture[1]. It draws 20 Wikipedia views per month (conjecture category, ranking #39 of 128).[2]

Key Facts

  • Lehmer's totient problem's instance of is recorded as conjecture[3].
  • Lehmer's totient problem's instance of is recorded as mathematical problem[4].
  • Derrick Henry Lehmer is named after Lehmer's totient problem[5].
  • Lehmer's totient problem's Freebase ID is recorded as /m/0swnxpj[6].
  • Lehmer's totient problem's MathWorld ID is recorded as LehmersTotientProblem[7].
  • Lehmer's totient problem's maintained by WikiProject is recorded as WikiProject Mathematics[8].
  • Lehmer's totient problem's Microsoft Academic ID is recorded as 2779721071[9].

Body

Designation and Status

Recorded instance of include conjecture[3] and mathematical problem[4].

History and Context

Derrick Henry Lehmer is named after Lehmer's totient problem[5].

Why It Matters

Lehmer's totient problem draws 20 Wikipedia views per month (conjecture category, ranking #39 of 128).[2] It has Wikipedia articles in 6 language editions, a strong signal of global cultural recognition.[10]

References

Programmatic citations — every numbered marker resolves to a verifiable graph row below.

Direct Wikidata claims

  1. [3] ↑ . wikidata.org.
  2. [4] ↑ . wikidata.org.
  3. [5] ↑ . wikidata.org.
  4. [6] ↑ . wikidata.org.
  5. [7] ↑ . wikidata.org.
  6. [8] ↑ . wikidata.org.
  7. [9] ↑ . wikidata.org.

Class ancestry

  1. [1] ↑ . Wikidata. wikidata.org.

Aggregate / graph-position facts

  1. [2] ↑ . Wikimedia Foundation. dumps.wikimedia.org.
  2. [10] ↑ . Wikidata sitelinks. wikidata.org.

📑 Cite this page

Use these citations when quoting this entity in research, articles, AI prompts, or wherever provenance matters. We aggregate Wikidata + Wikipedia + authoritative open-data sources; the stitched, scored, cross-referenced view is what 4ort.xyz contributes.

APA 4ort.xyz Knowledge Graph. (2026). Lehmer's totient problem. Retrieved May 3, 2026, from https://4ort.xyz/entity/lehmer-s-totient-problem
MLA “Lehmer's totient problem.” 4ort.xyz Knowledge Graph, 4ort.xyz, 3 May. 2026, https://4ort.xyz/entity/lehmer-s-totient-problem.
BibTeX @misc{4ortxyz_lehmer-s-totient-problem_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{Lehmer's totient problem}}, year = {2026}, url = {https://4ort.xyz/entity/lehmer-s-totient-problem}, note = {Accessed: 2026-05-03}}
LLM prompt According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): Lehmer's totient problem — https://4ort.xyz/entity/lehmer-s-totient-problem (retrieved 2026-05-03)

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