Finite Group DatabasebetaFinite Group Databasebeta| order | 640 |
| automorphism | ? |
| homology | Abelianization (H1) = C24 · Schur multiplier (H2) = C23×C4 |
No aliases for this group.
| Fitting | C5×#400 ⋊ C2 |
| Sylow | C5 ⋊ #2591 |
| subgroup | G/H | |
|---|---|---|
| center, Frattini | C23 | C23×D5 |
| commutator, socle, cosocle | C23×C5 | C24 |
| Fitting | C5×#400 | C2 |
| prime radical | C2×#4041 | C2 |
| hypercenter | #400 | D5 |
| hypocenter | C5 | #2591 |
| LCS | G ▷ C23×C5 ▷ C5 | |
| UCS | C1 ◁ C23 ◁ #400 | |
596 conjugacy classes of subgroups; only the 139 normal subgroups are shown.
This group has 596 conjugacy classes of subgroups — too many to draw. Only its 139 normal subgroups are shown.
Dotted edges: containments with no intermediate normal subgroup — omitted non-normal subgroups may lie between.
| transitive degree | μt(G) = 320 |
Polycyclic presentation:
2^7,5|a^2=f,b^2=eg,c^2=g,b^a=be,c^a=cfg,d^a=de,h^a=h^4,c^b=cg,h^d=h^482 conjugacy classes — view the full character table.
| maximal subgroup of | #12009820, #12010222, #12073436, … |
| maximal normal subgroup of | #12009820, #12010222, #12073436, … |
| maximal quotient of | #12021690, #12022059, #12022701, … |
Construct this group in GAP via the SmallGroups library:
gap> SmallGroup(640, 12171);