A216823 Prime factors of Giuga numbers A007850 with 8 or fewer prime divisors.

2, 3, 5, 7, 11, 13, 17, 23, 31, 41, 43, 59, 71, 103, 163, 1381, 1831, 3041, 4447, 47057, 47059, 47137, 61559, 67213, 138683, 713863, 775807, 2861051, 28282147, 29133437, 2259696349, 3892535183, 110725121051, 1456230512169437

Offset: 1

Author

Jonathan Sondow, Sep 17 2012

Keywords

• nonn
• fini
• full

Comments

See A007850 for comments, references, and links.

Examples

			30 = 2*3*5 is a Giuga number, so 2, 3, 5 are members.
		

Crossrefs

Cf. A007850, A216824, A236434.