Open problem

Open problem - known problem or question which is thought to have an objective and verifiable solution or explanation, but which has not yet been solved. Article “Open problem” in English Wikipedia has 18.5 points for quality (as of July 1, 2026). The article contains 6 references and 3 sections.

This article has the best quality in Korean Wikipedia. However, this article is the most popular in English version.

Since the creation of article “Open problem”, its content was written by 58 registered users of English Wikipedia and edited by 135 registered Wikipedia users in all languages.

The article is cited 232 times in English Wikipedia and cited 466 times in all languages.

The highest Authors Interest rank from 2001:

• Local (English): #34980 in June 2003
• Global: #45593 in June 2003

The highest popularity rank from 2008:

• Local (English): #163039 in May 2020
• Global: #169484 in March 2008

There are 12 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, 2026 (including revision history and pageviews for previous years).

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

#	Language	Quality grade	Quality score
1	Korean (ko) 열린 문제		21.9736
2	Portuguese (pt) Problema em aberto		19.9536
3	Arabic (ar) مسألة مفتوحة		19.673
4	Chinese (zh) 未解決的問題		19.0356
5	Spanish (es) Problema no resuelto		18.7336
6	Indonesian (id) Masalah terbuka		18.5308
7	Italian (it) Problema aperto		18.5297
8	English (en) Open problem		18.476
9	French (fr) Problème ouvert		17.9584
10	Galician (gl) Problema sen resolver		13.8618

More...

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

The most popular language versions of the article "Open problem" in all the time

#	Language	Popularity award	Relative popularity
1	English (en) Open problem		416 375
2	Spanish (es) Problema no resuelto		307 989
3	Hebrew (he) בעיה פתוחה		40 016
4	French (fr) Problème ouvert		27 741
5	Korean (ko) 열린 문제		12 866
6	Italian (it) Problema aperto		11 103
7	Indonesian (id) Masalah terbuka		10 587
8	Chinese (zh) 未解決的問題		6 055
9	Arabic (ar) مسألة مفتوحة		2 953
10	Portuguese (pt) Problema em aberto		2 696

More...

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

The most popular language versions of the article "Open problem" in June 2026

#	Language	Popularity award	Relative popularity
1	English (en) Open problem		1 961
2	Spanish (es) Problema no resuelto		192
3	Chinese (zh) 未解決的問題		135
4	Hebrew (he) בעיה פתוחה		71
5	French (fr) Problème ouvert		56
6	Portuguese (pt) Problema em aberto		29
7	Italian (it) Problema aperto		20
8	Korean (ko) 열린 문제		14
9	Danish (da) Uløst problem		7
10	Indonesian (id) Masalah terbuka		4

More...

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

Language versions of the article "Open problem" with the highest Authors Interest (number of authors). Only registered Wikipedia users were taken into account.

#	Language	AI award	Relative AI
1	English (en) Open problem		58
2	Hebrew (he) בעיה פתוחה		19
3	Spanish (es) Problema no resuelto		16
4	French (fr) Problème ouvert		13
5	Italian (it) Problema aperto		10
6	Korean (ko) 열린 문제		9
7	Galician (gl) Problema sen resolver		3
8	Arabic (ar) مسألة مفتوحة		2
9	Chinese (zh) 未解決的問題		2
10	Danish (da) Uløst problem		1

More...

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

Language versions of the article "Open problem" with the highest AI in June 2026

#	Language	AI award	Relative AI
1	Italian (it) Problema aperto		1
2	Arabic (ar) مسألة مفتوحة		0
3	Danish (da) Uløst problem		0
4	English (en) Open problem		0
5	Spanish (es) Problema no resuelto		0
6	French (fr) Problème ouvert		0
7	Galician (gl) Problema sen resolver		0
8	Hebrew (he) בעיה פתוחה		0
9	Indonesian (id) Masalah terbuka		0
10	Korean (ko) 열린 문제		0

More...

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

Language versions of the article "Open problem" with the highest Citation Index (CI)

#	Language	CI award	Relative CI
1	English (en) Open problem		232
2	Hebrew (he) בעיה פתוחה		89
3	Korean (ko) 열린 문제		44
4	Spanish (es) Problema no resuelto		36
5	French (fr) Problème ouvert		29
6	Portuguese (pt) Problema em aberto		8
7	Galician (gl) Problema sen resolver		7
8	Indonesian (id) Masalah terbuka		7
9	Chinese (zh) 未解決的問題		5
10	Arabic (ar) مسألة مفتوحة		4

More...

#	Language	Value
ar	Arabic مسألة مفتوحة
da	Danish Uløst problem
en	English Open problem
es	Spanish Problema no resuelto
fr	French Problème ouvert
gl	Galician Problema sen resolver
he	Hebrew בעיה פתוחה
id	Indonesian Masalah terbuka
it	Italian Problema aperto
ko	Korean 열린 문제
pt	Portuguese Problema em aberto
zh	Chinese 未解決的問題

Best Rank

English: #163039 05.2020

Global: #169484 03.2008

Best Rank

English: #34980 06.2003

Global: #45593 06.2003

On 1 July 2026 in multilingual Wikipedia, Internet users most often read articles on the following topics: 2026 FIFA World Cup, Kylian Mbappé, Erling Haaland, Democratic Republic of the Congo, FIFA World Cup, Harry Kane, Romelu Lukaku, Senegal, Michael Olise, Sadio Mané.

In English Wikipedia the most popular articles on that day were: 2026 FIFA World Cup, Harry Kane, Julián Quiñones, List of FIFA World Cup top goalscorers, Kylian Mbappé, Democratic Republic of the Congo, Erling Haaland, DR Congo national football team, Melat Kiros, FIFA World Cup.

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 50 million Wikipedia articles in 55 languages. Quality scores of articles are based on Wikipedia dumps from July, 2026. When calculating current popularity and AI of articles data from June 2026 was taken into account. For historical values of popularity and AI WikiRank used data from 2001 to 2026... More information