C₂×#2367 #34140

order	256
nilpotency class	2
isoclinism	isoclinic class of D₄²
automorphism	Aut(G) order 1048576
homology	Abelianization (H₁) = C₂⁴×C₄ · Schur multiplier (H₂) = C₂⁹

Aliases

1839 conjugacy classes of subgroups.

minimal degree	μ(G) = 18
transitive degree	μ_t(G) = 128

A minimal faithful permutation representation — 5 generators on 18 points:

(1,2);(4,6)(7,8,10,9)(11,12)(13,14)(15,16)(17,18);(7,9,10,8)(12,16)(14,17);(3,4,5,6)(11,13)(12,17)(14,16)(15,18);(11,14,15,17)(12,13,16,18)

Construct this group in GAP via the SmallGroups library:

gap> SmallGroup(256, 27128);