Finite Group DatabasebetaFinite Group Databasebeta| order | 256 |
| nilpotency class | 3 |
| isoclinism | isoclinic class of #2018 |
| automorphism | Aut(G) order 8192 |
| homology | Abelianization (H1) = C22×C4 · Schur multiplier (H2) = C23 |
No aliases for this group.
| subgroup | G/H | |
|---|---|---|
| center | C2×C4 | #121 |
| commutator | C22×C4 | C22×C4 |
| Frattini, cosocle | C2×C42 | C23 |
| socle | C22 | #390 |
| prime radical | C23 | C4×D4 |
| LCS | G ▷ C22×C4 ▷ C2 ▷ C1 | |
| UCS | C1 ◁ C2×C4 ◁ C2×C42 ◁ G | |
| LECS | G ▷ C2×C42 ▷ C22 ▷ C1 | |
217 conjugacy classes of subgroups; only the 73 normal subgroups are shown.
This group has 217 conjugacy classes of subgroups — too many to draw. Only its 73 normal subgroups are shown.
Dotted edges: containments with no intermediate normal subgroup — omitted non-normal subgroups may lie between.
| minimal degree | μ(G) = 40 |
| transitive degree | μt(G) = 128 |
A minimal faithful permutation representation — 3 generators on 40 points:
(1,2,6,7,5,3,4,8)(9,10)(11,15,20,29)(12,22)(13,25)(14,17)(16,23)(18,26)(19,31,32,40)(21,35,34,28)(24,36)(27,38,39,33)(30,37);(1,3,6,8,5,2,4,7)(9,11,14,20)(10,15)(12,19,24,32)(13,21,26,34)(16,27)(17,29)(18,28)(22,31)(23,33,37,38)(25,35)(30,39)(36,40);(1,4,5,6)(2,7,3,8)(9,12,13,23,14,24,26,37)(10,16,18,22,17,30,25,36)(11,19,21,33,20,32,34,38)(15,27,28,31,29,39,35,40)Polycyclic presentation:
2^8|a^2=f,b^2=dfg,c^2=e,e^2=g,f^2=h,b^a=bd,c^a=ce,d^a=dg,e^a=eg,c^b=ch,d^b=dg,f^b=fg52 conjugacy classes — view the full character table.
| maximal subgroup of | #137458, #137461, #137462, … |
| maximal normal subgroup of | #137458, #137461, #137462, … |
| maximal quotient of | #102012, #102017, #102019, … |
Construct this group in GAP via the SmallGroups library:
gap> SmallGroup(256, 2659);