Finite Group DatabasebetaFinite Group Databasebeta| order | 640 |
| automorphism | ? |
| homology | Abelianization (H1) = C22×C42 · Schur multiplier (H2) = C24×C4 |
No aliases for this group.
| Sylow | C5 ⋊ #2276 |
| subgroup | G/H | |
|---|---|---|
| center, Frattini | C23 | C23×D5 |
| commutator | C2×C5 | C22×C42 |
| Fitting | C2×C4×C5×Q8 | C2 |
| socle, prime radical, cosocle | C23×C5 | C24 |
| hypercenter | C2×C4×Q8 | D5 |
| hypocenter | C5 | #2276 |
| LCS | G ▷ C2×C5 ▷ C5 | |
| UCS | C1 ◁ C23 ◁ C2×C4×Q8 | |
628 conjugacy classes of subgroups; only the 389 normal subgroups are shown.
This group has 628 conjugacy classes of subgroups — too many to draw. Only its 389 normal subgroups are shown.
Dotted edges: containments with no intermediate normal subgroup — omitted non-normal subgroups may lie between.
| transitive degree | μt(G) = 640 |
Polycyclic presentation:
2^7,5|a^2=f,b^2=g,c^2=ef,d^2=e,b^a=be,d^a=de,c^b=ce,h^b=h^4148 conjugacy classes — view the full character table.
| maximal subgroup of | #11996200, #11996204, #11996214, … |
| maximal normal subgroup of | #11996200, #11996204, #11996214, … |
| maximal quotient of | #12020385, #12020589, #12020593, … |
Construct this group in GAP via the SmallGroups library:
gap> SmallGroup(640, 16263);