Collatz conjecture

Quality:

Collatz conjecture - conjecture in mathematics that concerns sequences. Article "Collatz conjecture" in English Wikipedia has 76.2 points for quality (as of July 1, 2025). The article contains 53 references and 32 sections.

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

In June 2025 the article "Collatz conjecture" was edited by 3 authors in English Wikipedia and written by 17 authors in all languages.

Since the creation of article "Collatz conjecture", its content was written by 592 registered users of English Wikipedia and edited by 1733 registered Wikipedia users in all languages.

The article is cited 108 times in English Wikipedia and cited 796 times in all languages.

The highest Authors Interest rank from 2001:

• Local (English): #186 in March 2010
• Global: #1864 in August 2021

The highest popularity rank from 2008:

• Local (English): #1919 in March 2010
• Global: #3223 in August 2021

There are 33 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.

#	Language	Quality grade	Quality score
1	Catalan (ca) Conjectura de Collatz		81.0729
2	Chinese (zh) 考拉兹猜想		76.4959
3	English (en) Collatz conjecture		76.2247
4	German (de) Collatz-Problem		72.5991
5	Greek (el) Εικασία του Κόλατζ		63.5709
6	Japanese (ja) コラッツの問題		50.0394
7	French (fr) Conjecture de Syracuse		44.937
8	Esperanto (eo) Konjekto de Collatz		38.131
9	Persian (fa) حدس کولاتز		34.8218
10	Ukrainian (uk) Гіпотеза Коллатца		32.6677

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

#	Language	Popularity award	Relative popularity
1	English (en) Collatz conjecture		6 248 707
2	Japanese (ja) コラッツの問題		932 709
3	French (fr) Conjecture de Syracuse		917 670
4	German (de) Collatz-Problem		828 226
5	Russian (ru) Гипотеза Коллатца		479 720
6	Spanish (es) Conjetura de Collatz		404 943
7	Chinese (zh) 考拉兹猜想		238 041
8	Italian (it) Congettura di Collatz		214 663
9	Polish (pl) Problem Collatza		191 105
10	Portuguese (pt) Conjectura de Collatz		100 595

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		37 069
2	Japanese (ja) コラッツの問題		5 697
3	French (fr) Conjecture de Syracuse		4 228
4	German (de) Collatz-Problem		3 417
5	Russian (ru) Гипотеза Коллатца		2 229
6	Chinese (zh) 考拉兹猜想		1 760
7	Spanish (es) Conjetura de Collatz		1 447
8	Italian (it) Congettura di Collatz		1 064
9	Persian (fa) حدس کولاتز		715
10	Polish (pl) Problem Collatza		676

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		592
2	German (de) Collatz-Problem		197
3	French (fr) Conjecture de Syracuse		164
4	Italian (it) Congettura di Collatz		85
5	Polish (pl) Problem Collatza		74
6	Japanese (ja) コラッツの問題		68
7	Chinese (zh) 考拉兹猜想		63
8	Spanish (es) Conjetura de Collatz		59
9	Russian (ru) Гипотеза Коллатца		55
10	Dutch (nl) Vermoeden van Collatz		36

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	Spanish (es) Conjetura de Collatz		7
2	German (de) Collatz-Problem		3
3	English (en) Collatz conjecture		3
4	French (fr) Conjecture de Syracuse		2
5	Persian (fa) حدس کولاتز		1
6	Simple English (simple) Collatz conjecture		1
7	Arabic (ar) حدسية كولاتز		0
8	Catalan (ca) Conjectura de Collatz		0
9	Czech (cs) Collatzův problém		0
10	Danish (da) Collatz-formodningen		0

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

On 12 August 2025 in multilingual Wikipedia, Internet users most often read articles on the following topics: Cristiano Ronaldo, Wednesday, Georgina Rodríguez, ChatGPT, Weapons, Jenna Ortega, deaths in 2025, Taylor Swift, Miguel Uribe Turbay, 2025–26 UEFA Champions League.

In English Wikipedia the most popular articles on that day were: Weapons (2025 film), Danielle Spencer (American actress), Cristiano Ronaldo, Deaths in 2025, Taylor Swift, Wednesday (TV series), Superman (2025 film), Georgina Rodríguez, Coolie (2025 film), The Fantastic Four: First Steps.

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