Finite Group DatabasebetaFinite Group Databasebeta| order | 256 |
| nilpotency class | 3 |
| isoclinism | isoclinic class of #24274 |
| automorphism | Aut(G) = C211×D4 (order 16384) · Inn(G) = C22×D4 · Out(G) = C29 |
| homology | Abelianization (H1) = C24 · Schur multiplier (H2) = C24 |
No aliases for this group.
| subgroup | G/H | |
|---|---|---|
| center, socle | C23 | C22×D4 |
| commutator, Frattini, cosocle | C22×C4 | C24 |
| prime radical | #2407 | C2 |
| LCS | G ▷ C22×C4 ▷ C2 ▷ C1 | |
| UCS | C1 ◁ C23 ◁ C2×C4×D4 ◁ G | |
| LECS | G ▷ C22×C4 ▷ C2 ▷ C1 | |
516 conjugacy classes of subgroups.
| minimal degree | μ(G) = 20 |
| transitive degree | μt(G) = 128 |
A minimal faithful permutation representation — 4 generators on 20 points:
(1,2)(3,4)(5,6)(7,11)(8,10)(9,12)(14,18)(19,20);(5,7,8,12)(6,9,10,11)(13,14,15,20,16,18,17,19);(2,4)(13,14,16,18)(15,19,17,20);(6,10)(9,11)(13,15,16,17)(14,19,18,20)Polycyclic presentation:
2^8|b^2=eg,c^2=h,d^2=h,g^2=h,b^a=be,c^a=cf,d^a=deh,c^b=cg,d^b=dh,g^c=gh46 conjugacy classes — view the full character table.
| maximal subgroup of | C2×#28113, #6459346, #6459354, … |
| maximal normal subgroup of | C2×#28113, #6459346, #6459354, … |
| maximal quotient of | #316633, #316634, #316637, … |
Construct this group in GAP via the SmallGroups library:
gap> SmallGroup(256, 21101);