Collatz conjecture

Quality:

Collatz conjecture - conjecture in mathematics that concerns sequences. Article “Collatz conjecture” in Simple English Wikipedia has 27.3 points for quality (as of July 1, 2026). The article contains 7 references and 2 sections.

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

In June 2026 the article “Collatz conjecture” was edited by 1 authors in Simple English Wikipedia (4760^th place) and written by 12 authors in all languages.

Since the creation of article “Collatz conjecture”, its content was written by 13 registered users of Simple English Wikipedia and edited by 1779 registered Wikipedia users in all languages.

The article is cited 3 times in Simple English Wikipedia and cited 612 times in all languages.

The highest Authors Interest rank from 2001:

• Local (Simple English): #874 in January 2012
• Global: #1880 in August 2021

The highest popularity rank from 2008:

• Local (Simple English): #11516 in May 2026
• Global: #3219 in August 2021

There are 34 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	Catalan (ca) Conjectura de Collatz		81.146
2	English (en) Collatz conjecture		77.2595
3	Chinese (zh) 考拉兹猜想		76.5037
4	Korean (ko) 콜라츠 추측		72.0008
5	German (de) Collatz-Problem		71.0345
6	Greek (el) Εικασία του Κόλατζ		63.9722
7	Japanese (ja) コラッツの問題		49.9896
8	French (fr) Conjecture de Syracuse		45.6446
9	Esperanto (eo) Konjekto de Collatz		38.0022
10	Persian (fa) حدس کولاتز		34.8247

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

#	Language	Popularity award	Relative popularity
1	English (en) Collatz conjecture		6 661 623
2	Japanese (ja) コラッツの問題		1 001 760
3	French (fr) Conjecture de Syracuse		966 593
4	German (de) Collatz-Problem		870 164
5	Russian (ru) Гипотеза Коллатца		519 711
6	Spanish (es) Conjetura de Collatz		424 942
7	Chinese (zh) 考拉兹猜想		265 690
8	Italian (it) Congettura di Collatz		236 845
9	Polish (pl) Problem Collatza		203 404
10	Portuguese (pt) Conjectura de Collatz		105 337

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

#	Language	Popularity award	Relative popularity
1	English (en) Collatz conjecture		30 320
2	Japanese (ja) コラッツの問題		5 669
3	Chinese (zh) 考拉兹猜想		3 266
4	French (fr) Conjecture de Syracuse		3 098
5	German (de) Collatz-Problem		2 854
6	Russian (ru) Гипотеза Коллатца		2 311
7	Spanish (es) Conjetura de Collatz		1 579
8	Italian (it) Congettura di Collatz		1 361
9	Polish (pl) Problem Collatza		635
10	Persian (fa) حدس کولاتز		454

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

#	Language	AI award	Relative AI
1	English (en) Collatz conjecture		605
2	German (de) Collatz-Problem		197
3	French (fr) Conjecture de Syracuse		170
4	Italian (it) Congettura di Collatz		85
5	Japanese (ja) コラッツの問題		76
6	Polish (pl) Problem Collatza		75
7	Chinese (zh) 考拉兹猜想		65
8	Spanish (es) Conjetura de Collatz		63
9	Russian (ru) Гипотеза Коллатца		56
10	Dutch (nl) Vermoeden van Collatz		37

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

#	Language	AI award	Relative AI
1	English (en) Collatz conjecture		4
2	French (fr) Conjecture de Syracuse		3
3	Chinese (zh) 考拉兹猜想		3
4	Arabic (ar) حدسية كولاتز		1
5	Simple English (simple) Collatz conjecture		1
6	Catalan (ca) Conjectura de Collatz		0
7	Czech (cs) Collatzův problém		0
8	Danish (da) Collatz-formodningen		0
9	German (de) Collatz-Problem		0
10	Greek (el) Εικασία του Κόλατζ		0

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

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 Simple English Wikipedia the most popular articles on that day were: List of European countries, Black, List of sex positions, 2026 Iran war, Suresh Raina, Politics of Germany, Academy Award for Best Director, 2020, DYSS-TV, 2022.

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