Finite Group DatabasebetaFinite Group Databasebeta| order | 128 |
| nilpotency class | 2 |
| isoclinism | isoclinic class of #2403 |
| automorphism | Aut(G) = C22×#72232847 (order 8192) · Inn(G) = C24 · Out(G) = #6342371 |
| homology | Abelianization (H1) = C24 · Schur multiplier (H2) = C25 |
No aliases for this group.
| subgroup | G/H | |
|---|---|---|
| center, commutator, Frattini, socle, cosocle | C23 | C24 |
| prime radical | C22×D4 | C22 |
| LCS | G ▷ C23 ▷ C1 | |
| UCS | C1 ◁ C23 ◁ G | |
| LECS | G ▷ C23 ▷ C1 | |
305 conjugacy classes of subgroups; only the 112 normal subgroups are shown.
This group has 305 conjugacy classes of subgroups — too many to draw. Only its 112 normal subgroups are shown.
Dotted edges: containments with no intermediate normal subgroup — omitted non-normal subgroups may lie between.
| minimal degree | μ(G) = 16 |
| transitive degree | μt(G) = 64 |
A minimal faithful permutation representation — 4 generators on 16 points:
(5,6,7,8)(9,10,13,16)(11,15,12,14);(2,4)(9,11,13,12)(10,14,16,15);(1,2)(3,4)(5,6)(7,8)(9,12,13,11)(10,15,16,14);(9,10)(11,14)(12,15)(13,16)Polycyclic presentation:
2^7|a^2=f,b^2=e,c^2=e,b^a=be,c^a=cf,d^a=de,c^b=cg38 conjugacy classes — view the full character table.
| maximal subgroup of | #24407, #25566, C2×#2413, … |
| maximal normal subgroup of | #24407, #25566, C2×#2413, … |
| maximal quotient of | #13870, #13962, #13972, … |
Construct this group in GAP via the SmallGroups library:
gap> SmallGroup(128, 1145);