Brun's constant

sum of reciprocals of twin primes
Thing real_number Q850251
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Brun's constant

Summary

Brun's constant is a real number[1]. It draws 20 Wikipedia views per month (real_number category, ranking #1 of 2).[2]

Key Facts

  • Brun's constant's instance of is recorded as real number[3].
  • Brun's constant's instance of is recorded as mathematical constant[4].
  • Brun's constant's instance of is recorded as convergent series[5].
  • Viggo Brun is named after Brun's constant[6].
  • Brun's constant's time of discovery or invention is recorded as +1919-00-00T00:00:00Z[7].
  • Brun's constant's Freebase ID is recorded as /m/0b40l[8].
  • Brun's constant's OEIS ID is recorded as A065421[9].
  • Brun's constant's numeric value is recorded as {'amount': '+1.902160583190'}[10].
  • Brun's constant's numeric value is recorded as {'amount': '+2'}[11].
  • Brun's constant's Encyclopædia Britannica Online ID is recorded as topic/Bruns-constant[12].
  • Brun's constant's MathWorld ID is recorded as BrunsConstant[13].
  • Brun's constant's maintained by WikiProject is recorded as WikiProject Mathematics[14].
  • Brun's constant's ProofWiki ID is recorded as Definition:Brun's_Constant[15].

Why It Matters

Brun's constant draws 20 Wikipedia views per month (real_number category, ranking #1 of 2).[2] It has Wikipedia articles in 15 language editions, a strong signal of global cultural recognition.[16] It is known by 9 alternative names across languages and contexts.[17]

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] . Freebase Data Dumps. wikidata.org.
  7. [9] . wikidata.org.
  8. [10] . On-Line Encyclopedia of Integer Sequences. wikidata.org.
  9. [11] . books.google.com. books.google.com. Provenance: wikidata.org.
  10. [12] . wikidata.org.
  11. [13] . wikidata.org.
  12. [14] . wikidata.org.
  13. [15] . wikidata.org.

Class ancestry

  1. [1] . Wikidata. wikidata.org.

Aggregate / graph-position facts

  1. [2] . Wikimedia Foundation. dumps.wikimedia.org.
  2. [16] . Wikidata sitelinks. wikidata.org.
  3. [17] . Wikidata aliases. 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). Brun's constant. Retrieved May 3, 2026, from https://4ort.xyz/entity/brun-s-constant
MLA “Brun's constant.” 4ort.xyz Knowledge Graph, 4ort.xyz, 3 May. 2026, https://4ort.xyz/entity/brun-s-constant.
BibTeX @misc{4ortxyz_brun-s-constant_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{Brun's constant}}, year = {2026}, url = {https://4ort.xyz/entity/brun-s-constant}, note = {Accessed: 2026-05-03}}
LLM prompt According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): Brun's constant — https://4ort.xyz/entity/brun-s-constant (retrieved 2026-05-03)

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