C₅×#125 #4111

order	160
nilpotency class	2
isoclinism	isoclinic class of #120
automorphism	Aut(G) = C₄×#12687 (order 1024) · Inn(G) = C₂³ · Out(G) = C₂×C₄×C₂²⋊C₄
homology	Abelianization (H₁) = C₂³×C₅ · Schur multiplier (H₂) = C₂

Aliases

	subgroup	G/H
center, socle, prime radical	C₂²×C₅	C₂³
commutator, Frattini, cosocle	C₂²	C₂³×C₅
LCS	G ▷ C₂² ▷ C₁
UCS	C₁ ◁ C₂²×C₅ ◁ G

56 conjugacy classes of subgroups.

minimal degree	μ(G) = 21
transitive degree	μ_t(G) = 160

A minimal faithful permutation representation — 3 generators on 21 points:

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

Construct this group in GAP via the SmallGroups library:

gap> SmallGroup(160, 186);