Finite Group Databasebeta

← C4×D21 #4265

Subgroups — C4×D21 #4265

Order 168.

32 conjugacy classes of subgroups.

Conjugacy classes of subgroups

#subgroupG/Hclass sizemultiplicitynormal?properties
1C2×D21C211yesmaximal, characteristic
2C3×C4×C7C211yesmaximal, characteristic, complemented
3Dic21C211yesmaximal, characteristic, complemented
4C4×D7—31nomaximal, Hall
5C2×C3×C7C2211yescharacteristic
6D21C412yesdirect product factor
7C2×D7—31no—
8C4×C7D311yescharacteristic, complemented
9Dic7—31no—
10C4×D3—71nomaximal, Hall
11C3×C7C2×C411yescharacteristic, complemented, Hall
12C2×C7C2×D311yescharacteristic
13D7—32no—
14C2×D3—71no—
15C3×C4D711yescharacteristic, complemented
16Dic3—71no—
17C2×C4—211noSylow
18C7C4×D311yescharacteristic, complemented, Sylow
19C2×C3C2×D711yescharacteristic
20D3—72no—
21C22—211no—
22C4—211no—
23C4D2111yescharacteristic, direct product factor
24C3C4×D711yescharacteristic, complemented, Sylow
25C2—212no—
26C2C2×D2111yescharacteristic
subgroupG/H
center, hypercenterC4D21
commutator, hypocenterC3×C7C2×C4
FrattiniC2C2×D21
FittingC3×C4×C7C2
socle, cosocleC2×C3×C7C22
prime radicalC2×D21C2
LCSG ▷ C3×C7
UCSC1 ◁ C4

Complements

Splittings G = N ⋊ H with N normal; H ≅ G/N.

NH ≅ G/Ntype
2. C3×C4×C7C2semidirect
3. Dic21C2semidirect
6. D21C4direct (N × H)
8. C4×C7D3semidirect
11. C3×C7C2×C4semidirect
15. C3×C4D7semidirect
18. C7C4×D3semidirect
23. C4D21direct (N × H)
24. C3C4×D7semidirect

Maximal subgroups

By isomorphism type — maximal subgroups of the same type appear once, whether or not they are normal.

subgroupindex
C2×D212
C3×C4×C72
Dic212
C4×D73
C4×D37