🌐EnglishEnglishDeutschEspañolFrançaisItalianoNederlandsPortuguêsSvenskaTiếng ViệtTürkçeРусскийالعربية한국어中文日本語EntityQ674928· pop 29· linked from 301 articlespentagonal numberpolygonal numberWikidata factsImagePentagonal number.gifSources (1)wikidata.orgvia Wikidata · CC0Available in 28 languagesEspañolFrançaisDeutsch中文日本語РусскийPortuguêsItalianoالعربيةCatalanCzechConnectionsprime numberEntityarithmetic progressionEntityCategoriesFigurate numbers