Class number problem

en

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Class number problem

Quality:

Class number problem - finding complete list of imaginary quadratic fields having a given class number. Article “Class number problem” in English Wikipedia has 29.8 points for quality (as of July 1, 2025). The article contains 13 references and 9 sections.

In this language version of Wikipedia the article has the best quality. Also, this article is the most popular in that (English) language version.

Since the creation of article “Class number problem”, its content was written by 49 registered users of English Wikipedia and edited by 80 registered Wikipedia users in all languages.

The article is cited 40 times in English Wikipedia and cited 69 times in all languages.

The highest Authors Interest rank from 2001:

  • Local (English): #86451 in May 2004
  • Global: #134308 in April 2004

The highest popularity rank from 2008:

  • Local (English): #384420 in May 2013
  • Global: #641032 in May 2013

There are 4 language versions for this article in the WikiRank database (of the considered 55 Wikipedia language editions).

The quality and popularity assessment was based on Wikipédia dumps from July 1, 2025 (including revision history and pageviews for previous years).

The table below shows the language versions of the article with the highest quality.

Languages with the highest quality

#LanguageQuality gradeQuality score
1English (en)
Class number problem
29.7736
2Japanese (ja)
類数問題
15.7369
3French (fr)
Problème du nombre de classes pour les corps quadratiques imaginaires
10.3327
4Dutch (nl)
Klassengetalprobleem
1.2201
More...

The following table shows the most popular language versions of the article.

Most popular in all the time

The most popular language versions of the article "Class number problem" in all the time
#LanguagePopularity awardRelative popularity
1English (en)
Class number problem
190 937
2Japanese (ja)
類数問題
14 288
3French (fr)
Problème du nombre de classes pour les corps quadratiques imaginaires
8 223
4Dutch (nl)
Klassengetalprobleem
1 437
More...

The following table shows the language versions of the article with the highest popularity in the last month.

Most popular in June 2025

The most popular language versions of the article "Class number problem" in June 2025
#LanguagePopularity awardRelative popularity
1English (en)
Class number problem
1 427
2Japanese (ja)
類数問題
83
3French (fr)
Problème du nombre de classes pour les corps quadratiques imaginaires
21
4Dutch (nl)
Klassengetalprobleem
7
More...

The following table shows the language versions of the article with the highest Authors’ Interest.

The highest AI

Language versions of the article "Class number problem" with the highest Authors Interest (number of authors). Only registered Wikipedia users were taken into account.
#LanguageAI awardRelative AI
1English (en)
Class number problem
49
2French (fr)
Problème du nombre de classes pour les corps quadratiques imaginaires
17
3Japanese (ja)
類数問題
10
4Dutch (nl)
Klassengetalprobleem
4
More...

The following table shows the language versions of the article with the highest Authors’ Interest in the last month.

The highest AI in June 2025

Language versions of the article "Class number problem" with the highest AI in June 2025
#LanguageAI awardRelative AI
1English (en)
Class number problem
0
2French (fr)
Problème du nombre de classes pour les corps quadratiques imaginaires
0
3Japanese (ja)
類数問題
0
4Dutch (nl)
Klassengetalprobleem
0
More...

The following table shows the language versions of the article with the highest number of citations.

The highest CI

Language versions of the article "Class number problem" with the highest Citation Index (CI)
#LanguageCI awardRelative CI
1English (en)
Class number problem
40
2French (fr)
Problème du nombre de classes pour les corps quadratiques imaginaires
15
3Japanese (ja)
類数問題
9
4Dutch (nl)
Klassengetalprobleem
5
More...

Scores

Estimated value for Wikipedia:
English:
Global:
Popularity in June 2025:
English:
Global:
Popularity in all years:
English:
Global:
Authors in June 2025:
English:
Global:
Registered authors in all years:
English:
Global:
Citations:
English:
Global:

Quality measures

Interwikis

#LanguageValue
enEnglish
Class number problem
frFrench
Problème du nombre de classes pour les corps quadratiques imaginaires
jaJapanese
類数問題
nlDutch
Klassengetalprobleem

Popularity rank trends

Best Rank English:
#384420
05.2013
Global:
#641032
05.2013

AI rank trends

Best Rank English:
#86451
05.2004
Global:
#134308
04.2004

Languages comparison

Important global interconnections (July 2024 – June 2025)

Wikipedia readers most often find their way to information on Class number problem from Wikipedia articles about Quadratic field, Ideal class group, Heegner number, Riemann hypothesis and List of number fields with class number one. Whereas reading the article about Class number problem people most often go to Wikipedia articles on Ideal class group, List of number fields with class number one, Quadratic field, Heegner number and Heegner point.

Cumulative results of quality and popularity of the Wikipedia article

List of Wikipedia articles in different languages (starting with the most popular):

News from 15 February 2026

On 15 February 2026 in multilingual Wikipedia, Internet users most often read articles on the following topics: Jeffrey Epstein, Wuthering Heights, 2026 Winter Olympics, Epstein files, Ilia Malinin, Wuthering Heights, Ghislaine Maxwell, Lucas Pinheiro Braathen, 2026 Winter Olympics medal table, Valentine's Day.

In English Wikipedia the most popular articles on that day were: Jeffrey Epstein, Wuthering Heights, Wuthering Heights (2026 film), 2026 Winter Olympics, Lucas Pinheiro Braathen, Ice hockey at the 2026 Winter Olympics – Men's tournament, Epstein files, John F. Kennedy Jr., Anthony Kim, James Van Der Beek.

About WikiRank

The WikiRank project is intended for automatic relative evaluation of the articles in the various language versions of Wikipedia. At the moment the service allows to compare over 44 million Wikipedia articles in 55 languages. Quality scores of articles are based on Wikipedia dumps from July, 2025. When calculating current popularity and AI of articles data from June 2025 was taken into account. For historical values of popularity and AI WikiRank used data from 2001 to 2025... More information