Pell number

Pell number - denominator of close rational approximation to the square root of 2. Article “Pell number” in English Wikipedia has 43.5 points for quality (as of July 1, 2025). The article contains 8 references and 14 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.

In June 2025 the article “Pell number” was edited by 2 authors in English Wikipedia and written by 6 authors in all languages.

Since the creation of article “Pell number”, its content was written by 79 registered users of English Wikipedia and edited by 243 registered Wikipedia users in all languages.

The article is cited 427 times in English Wikipedia and cited 1491 times in all languages.

The highest Authors Interest rank from 2001:

• Local (English): #33299 in January 2005
• Global: #54049 in January 2005

The highest popularity rank from 2008:

• Local (English): #148644 in April 2019
• Global: #232384 in April 2019

There are 19 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	English (en) Pell number		43.5409
2	Catalan (ca) Nombre de Pell		33.9266
3	Greek (el) Αριθμοί του Πελ		30.1036
4	Ukrainian (uk) Число Пелля		28.4588
5	Spanish (es) Número de Pell		26.8446
6	Russian (ru) Число Пелля		25.1255
7	Serbian (sr) Пел број		23.737
8	Chinese (zh) 佩尔数		20.7446
9	Romanian (ro) Număr Pell		16.2771
10	Armenian (hy) Պելի թիվ		16.0094

More...

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

The most popular language versions of the article "Pell number" in all the time

#	Language	Popularity award	Relative popularity
1	English (en) Pell number		486 884
2	Japanese (ja) ペル数		51 559
3	French (fr) Suite de Pell		38 432
4	Russian (ru) Число Пелля		32 877
5	German (de) Pell-Folge		24 733
6	Chinese (zh) 佩尔数		24 282
7	Polish (pl) Liczby Pella		23 130
8	Spanish (es) Número de Pell		16 742
9	Hebrew (he) סדרת פל		13 035
10	Greek (el) Αριθμοί του Πελ		7 912

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 "Pell number" in June 2025

#	Language	Popularity award	Relative popularity
1	English (en) Pell number		1 872
2	Russian (ru) Число Пелля		220
3	Japanese (ja) ペル数		174
4	Chinese (zh) 佩尔数		144
5	French (fr) Suite de Pell		108
6	Spanish (es) Número de Pell		75
7	Korean (ko) 펠 수		72
8	German (de) Pell-Folge		67
9	Hebrew (he) סדרת פל		65
10	Polish (pl) Liczby Pella		22

More...

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

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

#	Language	AI award	Relative AI
1	English (en) Pell number		79
2	German (de) Pell-Folge		22
3	French (fr) Suite de Pell		22
4	Hebrew (he) סדרת פל		18
5	Ukrainian (uk) Число Пелля		14
6	Galician (gl) Número de Pell		12
7	Russian (ru) Число Пелля		12
8	Polish (pl) Liczby Pella		10
9	Greek (el) Αριθμοί του Πελ		9
10	Japanese (ja) ペル数		9

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 "Pell number" with the highest AI in June 2025

#	Language	AI award	Relative AI
1	Russian (ru) Число Пелля		4
2	English (en) Pell number		2
3	Arabic (ar) رقم بيل		0
4	Catalan (ca) Nombre de Pell		0
5	German (de) Pell-Folge		0
6	Greek (el) Αριθμοί του Πελ		0
7	Spanish (es) Número de Pell		0
8	French (fr) Suite de Pell		0
9	Galician (gl) Número de Pell		0
10	Hebrew (he) סדרת פל		0

More...

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

Language versions of the article "Pell number" with the highest Citation Index (CI)

#	Language	CI award	Relative CI
1	English (en) Pell number		427
2	Japanese (ja) ペル数		168
3	French (fr) Suite de Pell		144
4	Arabic (ar) رقم بيل		119
5	Polish (pl) Liczby Pella		107
6	Chinese (zh) 佩尔数		100
7	German (de) Pell-Folge		97
8	Ukrainian (uk) Число Пелля		96
9	Russian (ru) Число Пелля		62
10	Korean (ko) 펠 수		47

More...

#	Language	Value
ar	Arabic رقم بيل
ca	Catalan Nombre de Pell
de	German Pell-Folge
el	Greek Αριθμοί του Πελ
en	English Pell number
es	Spanish Número de Pell
fr	French Suite de Pell
gl	Galician Número de Pell
he	Hebrew סדרת פל
hy	Armenian Պելի թիվ
ja	Japanese ペル数
ko	Korean 펠 수
nl	Dutch Pellgetal
pl	Polish Liczby Pella
ro	Romanian Număr Pell
ru	Russian Число Пелля
sr	Serbian Пел број
uk	Ukrainian Число Пелля
zh	Chinese 佩尔数

Best Rank

English: #148644 04.2019

Global: #232384 04.2019

Best Rank

English: #33299 01.2005

Global: #54049 01.2005

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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