🌐EnglishEnglishBahasa IndonesiaEspañolFrançaisItalianoPortuguêsTiếng ViệtРусскийالعربية한국어中文日本語EntityQ18206266· pop 14· linked from 19 articlesEuclid–Euler theoremtheorem characterizing the even perfect numbersAvailable in 14 languagesEspañolFrançais中文日本語PortuguêsItalianoالعربيةBahasa IndonesiaSlovenianTamilConnectionsEuclidEntityLeonhard EulerEntityCategoriesEuclidLeonhard EulerMersenne primesPerfect numbersTheorems in number theory