Finite Group DatabasebetaFinite Group Databasebeta| order | 640 |
| automorphism | ? |
| homology | Abelianization (H1) = C24 · Schur multiplier (H2) = C26 |
No aliases for this group.
| Fitting | C5×#381 ⋊ C2 |
| Sylow | C5 ⋊ #2849 |
| subgroup | G/H | |
|---|---|---|
| center, Frattini | C23 | C23×D5 |
| commutator, socle, cosocle | C23×C5 | C24 |
| Fitting | C5×#381 | C2 |
| prime radical | C2×#4028 | C2 |
| hypercenter | #381 | D5 |
| hypocenter | C5 | #2849 |
| LCS | G ▷ C23×C5 ▷ C5 | |
| UCS | C1 ◁ C23 ◁ #381 | |
1102 conjugacy classes of subgroups; only the 181 normal subgroups are shown.
This group has 1102 conjugacy classes of subgroups — too many to draw. Only its 181 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|c^2=e,b^a=be,c^a=cf,d^a=dg,h^a=h^4,h^d=h^4100 conjugacy classes — view the full character table.
| maximal subgroup of | #12130884, #12130888, #12130898, … |
| maximal normal subgroup of | #12130884, #12130888, #12130898, … |
| maximal quotient of | #12030461, #12030510, #12030514, … |
Construct this group in GAP via the SmallGroups library:
gap> SmallGroup(640, 7959);