EntityQ1322644· pop 16· linked from 82 articlesHeegner numberSign in to savesquare-free positive integer such that the corresponding imaginary quadratic field has unique factorization; one of 1, 2, 3, 7, 11, 19, 43, 67, or 163Connectionstranscendental numberEntityideal class groupEntityCarl Friedrich GaussEntityPiConceptInternational Standard Book NumberEntitycomplex numberEntitynumber theoryEntitySrinivasa RamanujanEntityApril Fools' DayConceptdigital object identifierEntitygolden ratioEntityquadratic equationEntityirrational numberEntityEuler's numberEntitynth rootEntityflag of NepalEntityFourier seriesEntitybibcodeEntityalgebraic numberEntityCharles HermiteEntityCategoriesAlgebraic number theoryReal transcendental numbers