Finite Group DatabasebetaFinite Group Databasebeta| order | 320 |
| automorphism | ? |
| homology | Abelianization (H1) = C24 · Schur multiplier (H2) = C25 |
No aliases for this group.
| Fitting | C5×#135 ⋊ C2 |
| Sylow | C5 ⋊ #575 |
| subgroup | G/H | |
|---|---|---|
| center | C4 | D4×D5 |
| commutator, cosocle | C4×C5 | C24 |
| Frattini | C4 | C23×D5 |
| Fitting | C5×#135 | C2 |
| socle | C2×C5 | C22×D4 |
| hypercenter | #135 | D5 |
| hypocenter | C5 | #575 |
| LCS | G ▷ C4×C5 ▷ C2×C5 ▷ C5 | |
| UCS | C1 ◁ C4 ◁ C2×C4 ◁ #135 | |
262 conjugacy classes of subgroups; only the 99 normal subgroups are shown.
This group has 262 conjugacy classes of subgroups — too many to draw. Only its 99 normal subgroups are shown.
Dotted edges: containments with no intermediate normal subgroup — omitted non-normal subgroups may lie between.
| minimal degree | μ(G) = 21 |
| transitive degree | μt(G) = 80 |
A minimal faithful permutation representation — 4 generators on 21 points:
(1,2,4,5,3)(6,8)(7,12)(9,18)(10,14)(11,15)(13,20)(16,17)(19,21);(7,11)(8,16)(9,17)(12,20)(14,18)(15,21);(6,7)(8,15)(9,13)(10,11)(12,14)(16,20)(17,19)(18,21);(2,3)(4,5)(8,14)(12,15)(16,18)(20,21)Polycyclic presentation:
2^6,5|e^2=f,d^a=df,g^a=g^4,c^b=cf,d^b=df,d^c=de,e^c=ef,e^d=ef50 conjugacy classes — view the full character table.
| maximal subgroup of | #10600045, #10600046, #10602309, … |
| maximal normal subgroup of | #10600045, #10600046, #10602309, … |
| maximal quotient of | #10610550, #10610553, #10610557, … |
Construct this group in GAP via the SmallGroups library:
gap> SmallGroup(320, 1440);