🌐EnglishEnglishEspañolFrançaisPortuguêsSvenskaРусский中文日本語EntityQ1440989· pop 9· linked from 213 articlesHilbert numberpositive integer of the form (4n + 1)Available in 9 languagesEspañol中文日本語РусскийPortuguêsBanglaRomanianSvenskavia Wikidata sitelinks · CC0Connectionsnatural numberEntityprime numberEntityCategoriesInteger sequences