C₂×#1713 #19602

order	256
nilpotency class	3
isoclinism	isoclinic class of #1705
automorphism	Aut(G) order 1048576
homology	Abelianization (H₁) = C₂⁴ · Schur multiplier (H₂) = C₂⁴×C₄

Aliases

	subgroup	G/H
center, socle, prime radical	C₂³	#127
commutator, Frattini, cosocle	C₄²	C₂⁴
LCS	G ▷ C₄² ▷ C₂² ▷ C₁
UCS	C₁ ◁ C₂³ ◁ C₂×C₄² ◁ G
LECS	G ▷ C₄² ▷ C₂² ▷ C₁

439 conjugacy classes of subgroups.

minimal degree	μ(G) = 26
transitive degree	μ_t(G) = 256

A minimal faithful permutation representation — 4 generators on 26 points:

(1,2);(4,7)(5,8)(9,10)(11,12,15,18)(13,19,22,26)(14,23,20,17)(16,24,25,21);(11,13,20,24,15,22,14,21)(12,16,23,26,18,25,17,19);(3,4,8,10,6,9,5,7)

Construct this group in GAP via the SmallGroups library:

gap> SmallGroup(256, 12590);