🌐EnglishEnglishDeutschEspañolFrançaisItalianoPolskiPortuguêsSvenskaРусский中文日本語EntityQ966601· pop 14· linked from 301 articlesWieferich primeprime such that p² divides 2ᵖ⁻¹-1Connectionsprime numberEntityFermat's Last TheoremEntityCategoriesAbc conjectureClasses of prime numbersUnsolved problems in number theory