Finite Group DatabasebetaFinite Group Databasebeta| order | 640 |
| automorphism | ? |
| homology | Abelianization (H1) = C24 · Schur multiplier (H2) = C24 |
No aliases for this group.
| Sylow | C5 ⋊ #2842 |
| subgroup | G/H | |
|---|---|---|
| center, Frattini | C23 | C23×D5 |
| commutator, socle, cosocle | C23×C5 | C24 |
| Fitting | C5×#379 | C2 |
| prime radical | C25×C5 | C22 |
| hypercenter | #379 | D5 |
| hypocenter | C5 | #2842 |
| LCS | G ▷ C23×C5 ▷ C5 | |
| UCS | C1 ◁ C23 ◁ #379 | |
548 conjugacy classes of subgroups; only the 133 normal subgroups are shown.
This group has 548 conjugacy classes of subgroups — too many to draw. Only its 133 normal subgroups are shown.
Dotted edges: containments with no intermediate normal subgroup — omitted non-normal subgroups may lie between.
| transitive degree | μt(G) = 160 |
Polycyclic presentation:
2^7,5|b^2=eg,c^2=g,b^a=be,c^a=cf,c^b=cg,d^b=def,h^b=h^4,d^c=de82 conjugacy classes — view the full character table.
| maximal subgroup of | #12002556, #12002557, #12002558, … |
| maximal normal subgroup of | #12002556, #12002557, #12002558, … |
| maximal quotient of | #12030093, #12030098, #12030428, … |
Construct this group in GAP via the SmallGroups library:
gap> SmallGroup(640, 7658);