Finite Group DatabasebetaFinite Group Databasebeta| order | 640 |
| automorphism | ? |
| homology | Abelianization (H1) = C23 · Schur multiplier (H2) = C23 |
No aliases for this group.
| Sylow | C5 ⋊ #2025 |
294 conjugacy classes of subgroups; only the 85 normal subgroups are shown.
This group has 294 conjugacy classes of subgroups — too many to draw. Only its 85 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=d,b^2=dg,e^2=g,b^a=bd,c^a=ce,e^a=eg,h^a=h^4,c^b=cf,e^c=eg88 conjugacy classes — view the full character table.
| maximal subgroup of | #11986884, #11986886, D5×#2025, … |
| maximal normal subgroup of | #11986884, #11986886, D5×#2025, … |
| maximal quotient of | #12002290, #12002300, #12002327, … |
Construct this group in GAP via the SmallGroups library:
gap> SmallGroup(640, 2514);