C₄×#2618 #515204

order	512
nilpotency class	2
isoclinism	isoclinic class of #2613
automorphism	?
homology	Abelianization (H₁) = C₂⁴×C₄ · Schur multiplier (H₂) = C₂⁹

Aliases

3950 conjugacy classes of subgroups.

minimal degree	μ(G) = 20
transitive degree	μ_t(G) = 256

A minimal faithful permutation representation — 5 generators on 20 points:

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

Construct this group in GAP via the SmallGroups library:

gap> SmallGroup(512, 422400);