Finite Group DatabasebetaFinite Group Databasebeta| order | 256 |
| nilpotency class | 3 |
| isoclinism | isoclinic class of #3264 |
| automorphism | Aut(G) = C28×D4 (order 2048) · Inn(G) = C22×D4 · Out(G) = C26 |
| homology | Abelianization (H1) = C23×C4 · Schur multiplier (H2) = C26 |
No aliases for this group.
| subgroup | G/H | |
|---|---|---|
| center | C2×C4 | C22×D4 |
| commutator | C2×C4 | C23×C4 |
| Frattini, cosocle | C22×C4 | C24 |
| socle | C22 | C22×C22⋊C4 |
| prime radical | D4×#41 | C2 |
| LCS | G ▷ C2×C4 ▷ C2 ▷ C1 | |
| UCS | C1 ◁ C2×C4 ◁ C2×C4×D4 ◁ G | |
| LECS | G ▷ C22×C4 ▷ C2 ▷ C1 | |
747 conjugacy classes of subgroups.
| minimal degree | μ(G) = 20 |
| transitive degree | μt(G) = 32 |
A minimal faithful permutation representation — 4 generators on 20 points:
(2,4)(5,6,9,12,10,13,8,17)(7,14,16,11,15,20,18,19);(1,2)(3,4)(7,15)(11,19)(14,20)(16,18);(5,7)(6,11)(8,18)(9,16)(10,15)(12,20)(13,19)(14,17);(2,4)Polycyclic presentation:
2^8|a^2=g,f^2=h,g^2=h,b^a=be,c^a=cf,f^a=fh,c^b=ch,d^b=de,f^c=fh58 conjugacy classes — view the full character table.
| maximal subgroup of | C2×#22434, D4×#421, #6379109, … |
| maximal normal subgroup of | C2×#22434, D4×#421, #6379109, … |
| maximal quotient of | #219958, #219959, #219960, … |
Construct this group in GAP via the SmallGroups library:
gap> SmallGroup(256, 15422);