C₂×#2405 #34656

order	256
nilpotency class	2
isoclinism	isoclinic class of #2403
automorphism	Aut(G) order 2097152
homology	Abelianization (H₁) = C₂⁵ · Schur multiplier (H₂) = C₂¹⁰

Aliases

	subgroup	G/H
center, socle	C₂⁴	C₂⁴
commutator, Frattini, cosocle	C₂³	C₂⁵
prime radical	C₂⁴×D₄	C₂
LCS	G ▷ C₂³ ▷ C₁
UCS	C₁ ◁ C₂⁴ ◁ G
LECS	G ▷ C₂³ ▷ C₁

3911 conjugacy classes of subgroups.

minimal degree	μ(G) = 18
transitive degree	μ_t(G) = 64

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

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

Construct this group in GAP via the SmallGroups library:

gap> SmallGroup(256, 27644);