Finite Group DatabasebetaFinite Group Databasebeta| order | 640 |
| automorphism | ? |
| homology | Abelianization (H1) = C23 · Schur multiplier (H2) = C25 |
No aliases for this group.
| Fitting | C2×C5×#99 ⋊ C2 |
| Sylow | C5 ⋊ #2021 |
| subgroup | G/H | |
|---|---|---|
| center | C22 | #4028 |
| commutator, cosocle | C24×C5 | C23 |
| Frattini | C24 | C22×D5 |
| Fitting | C2×C5×#99 | C2 |
| socle | C22×C5 | #120 |
| hypercenter | C2×#99 | D5 |
| hypocenter | C5 | #2021 |
| LCS | G ▷ C24×C5 ▷ C2×C5 ▷ C5 | |
| UCS | C1 ◁ C22 ◁ C24 ◁ C2×#99 | |
638 conjugacy classes of subgroups; only the 73 normal subgroups are shown.
This group has 638 conjugacy classes of subgroups — too many to draw. Only its 73 normal subgroups are shown.
Dotted edges: containments with no intermediate normal subgroup — omitted non-normal subgroups may lie between.
| transitive degree | μt(G) = 80 |
Polycyclic presentation:
2^7,5|b^a=bd,c^a=ce,f^a=fg,h^a=h^4,c^b=cf,h^b=h^4,d^c=dg70 conjugacy classes — view the full character table.
| maximal subgroup of | D5×#2021, C2×#10600830, #12126543, … |
| maximal normal subgroup of | D5×#2021, C2×#10600830, #12126543, … |
| maximal quotient of | #11999495, #11999498, #11999502, … |
Construct this group in GAP via the SmallGroups library:
gap> SmallGroup(640, 2912);