Prime factors of Giuga numbers A007850 with 8 or fewer prime divisors.

Terms

a(0) =2a(1) =3a(2) =5a(3) =7a(4) =11a(5) =13a(6) =17a(7) =23a(8) =31a(9) =41a(10) =43a(11) =59a(12) =71a(13) =103a(14) =163a(15) =1381a(16) =1831a(17) =3041a(18) =4447a(19) =47057a(20) =47059a(21) =47137a(22) =61559a(23) =67213a(24) =138683a(25) =713863a(26) =775807a(27) =2861051a(28) =28282147a(29) =29133437