Finite Group DatabasebetaFinite Group Databasebeta| order | 640 |
| automorphism | ? |
| homology | Abelianization (H1) = C42 · Schur multiplier (H2) = C22 |
No aliases for this group.
| Sylow | C5 ⋊ #1389 |
128 conjugacy classes of subgroups; only the 69 normal subgroups are shown.
This group has 128 conjugacy classes of subgroups — too many to draw. Only its 69 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|a^2=d,b^2=e,c^2=fg,d^2=g,e^2=fg,f^2=g,b^a=bc,c^a=cf,e^a=ef,f^a=fg,c^b=cg,h^b=h^488 conjugacy classes — view the full character table.
| maximal subgroup of | D5×#1389, C2×#10598226, #12014562, … |
| maximal normal subgroup of | D5×#1389, C2×#10598226, #12014562, … |
| maximal quotient of | #11986180, #11986226, #11986234, … |
Construct this group in GAP via the SmallGroups library:
gap> SmallGroup(640, 308);