C₂×#495 #3146

order	128
nilpotency class	3
isoclinism	isoclinic class of #465
automorphism	Aut(G) order 32768
homology	Abelianization (H₁) = C₂⁴ · Schur multiplier (H₂) = C₂⁴×C₄

Aliases

	subgroup	G/H
center, socle	C₂³	C₂×D₄
commutator, Frattini, cosocle	C₂×C₄	C₂⁴
prime radical	C₂²×D₈	C₂
LCS	G ▷ C₂×C₄ ▷ C₂ ▷ C₁
UCS	C₁ ◁ C₂³ ◁ C₂×C₄² ◁ G
LECS	G ▷ C₂×C₄ ▷ C₂ ▷ C₁

296 conjugacy classes of subgroups.

minimal degree	μ(G) = 22
transitive degree	μ_t(G) = 64

A minimal faithful permutation representation — 4 generators on 22 points:

(1,2);(4,6)(7,8)(9,15)(10,18)(11,13)(12,16)(14,19)(17,21)(20,22);(7,9,10,16,11,17,19,22)(8,12,14,15,13,20,18,21);(3,4,5,6)(8,13)(12,20)(14,18)(15,21)

Construct this group in GAP via the SmallGroups library:

gap> SmallGroup(128, 1878);