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Giuga number

composite number n such that p divides n/p − 1 for every prime divisor p of n
Class type of: composite number, square-free integer Q1418543

Facts

2 properties
Subclass of
composite number, square-free integer[1][2]
Maintained by WikiProject
WikiProject Mathematics[3]
🏷️ Also known as
en Giuga number de Giuga-Zahl es numero de Giuga es número de Giuga es numeros de Giuga es números de Giuga fi Giugan luvut fi Giugan luku fr nombre de Giuga hu Giuga-szám ru Число Джуги sv Giugatal vi Số Giuga zh 朱加數
🔖 Identifiers · 4
Freebase ID
/m/081qt6
MathWorld ID
GiugaNumber
Microsoft Academic ID (discontinued)
2780841877
OEIS ID
A007850

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🔗 Connections
Subclass of 2
composite number, square-free integer
Examples 1
30
Maintained by WikiProject 1
WikiProject Mathematics
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References

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

Direct Wikidata claims

  1. [1] ↑ . wikidata.org.
  2. [2] ↑ . wikidata.org.
  3. [3] ↑ . wikidata.org.

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

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