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Lychrel number

number
Thing Mathematical Problem Q981018

Facts

4 properties
Instance of
mathematical problem, integer sequence, conjecture[2][3]
Part of
list of unsolved problems in mathematics[5]
Maintained by WikiProject
WikiProject Mathematics[6]
Named after
196[4]
🏷️ Also known as
en Lychrel number cs Lychrelové číslo de Lychrel-Zahl es número de Lychrel es numero de Lychrel fr nombre de Lychrel he מספר ליישרל hu Lychrel-szám ja リクレル数 ja 196問題 ko 라이크렐 수 nl Lychrel-getal ru Лишрел ru проблема 196 ru число Лишрел sv 196-algoritmen zh 利克瑞尔数 zh-hant 利克瑞爾數
🔖 Identifiers · 5
Freebase ID
/m/04wgzw
MathWorld ID
LychrelNumber
Microsoft Academic ID (discontinued)
178412546
OEIS ID
A023108
Stack Exchange tag
stackoverflow.com

Report an error or request removal Lineage (PROV-JSON)

🔗 Connections
Instance of 3
conjecture, integer sequence, mathematical problem
Maintained by WikiProject 1
WikiProject Mathematics
Named after 1
196
Part of 1
list of unsolved problems in mathematics
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Summary

Lychrel number is a mathematical problem[1].

References

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

Direct Wikidata claims

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

Class ancestry

  1. [1] ↑ . Wikidata. 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). Lychrel number. Retrieved November 7, 2026, from https://4ort.xyz/entity/lychrel-number
MLA “Lychrel number.” 4ort.xyz Knowledge Graph, 4ort.xyz, 7 Nov. 2026, https://4ort.xyz/entity/lychrel-number.
BibTeX @misc{4ortxyz_lychrel-number_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{Lychrel number}}, year = {2026}, url = {https://4ort.xyz/entity/lychrel-number}, note = {Accessed: 2026-11-07}}
LLM prompt According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): Lychrel number — https://4ort.xyz/entity/lychrel-number (retrieved 2026-11-07)

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