EntityQ281995· pop 14· linked from 105 articlesWagstaff primeSign in to saveprime number of the form (2ⁿ+1)/3, where n is another primeConnectionslist of prime numbersEntityPerrin numberEntitySamuel S. Wagstaff, Jr.Entitycomplex numberEntityprime numberEntity11EntityQ37141Entitynumber theoryEntityWayback MachineEntity17EntitycryptographyEntity19Entitydigital object identifierEntity23Entity29Entity31Entity47Entity41Entity43Entity37EntityCategoriesClasses of prime numbersUnsolved problems in number theory