Subgroups — C₂×#22551659 #30657739

Order 16448.

138 conjugacy classes of subgroups.

Conjugacy classes of subgroups

#	subgroup	G/H	class size	multiplicity	normal?	properties
1	C₂²×#14523346	C₂	1	2	yes	maximal
2	#22551659	C₂	1	4	yes	maximal, direct product factor
3	C₂×C₄×Dic₂₅₇	C₂	1	1	yes	maximal, characteristic
4	C₂×#14523346	—	2	4	no	—
5	C₂×#14523346	C₂²	1	4	yes	—
6	C₂²×Dic₂₅₇	C₄	1	1	yes	characteristic
7	C₂²×Dic₂₅₇	C₂²	1	1	yes	characteristic
8	C₄×Dic₂₅₇	C₄	1	2	yes	—
9	C₄×Dic₂₅₇	C₂²	1	2	yes	—
10	C₂²×C₄×C₂₅₇	C₄	1	1	yes	characteristic
11	#14523346	—	2	4	no	—
12	C₂×Dic₂₅₇	C₈	1	4	yes	complemented
13	C₂×Dic₂₅₇	C₂×C₄	1	1	yes	characteristic
14	C₂×Dic₂₅₇	C₂×C₄	1	2	yes	—
15	C₂×Dic₂₅₇	D₄	1	2	yes	—
16	C₂×Dic₂₅₇	Q₈	1	2	yes	—
17	C₂×Dic₂₅₇	C₂³	1	1	yes	characteristic
18	C₂³×C₂₅₇	C₂×C₄	1	1	yes	characteristic
19	C₂×C₄×C₂₅₇	—	2	2	no	—
20	C₂×C₄×C₂₅₇	C₂×C₄	1	2	yes	—
21	C₂²×C₂₅₇	C₄⋊C₄	1	2	yes	—
22	C₂²×C₂₅₇	C₂×C₈	1	2	yes	—
23	C₂²×C₂₅₇	M₁₆	1	2	yes	—
24	C₂²×C₂₅₇	C₂²×C₄	1	1	yes	characteristic
25	C₄×C₂₅₇	—	2	2	no	—
26	Dic₂₅₇	C₄⋊C₄	1	2	yes	—
27	Dic₂₅₇	C₂×C₈	1	4	yes	complemented
28	Dic₂₅₇	C₂×D₄	1	1	yes	characteristic
29	Dic₂₅₇	C₂×Q₈	1	1	yes	characteristic
30	C₂×C₂₅₇	C₄⋊C₈	1	4	yes	complemented
31	C₂×C₂₅₇	C₂×C₄⋊C₄	1	1	yes	characteristic
32	C₂×C₂₅₇	C₂²×C₈	1	1	yes	characteristic
33	C₂×C₂₅₇	C₂×M₁₆	1	1	yes	characteristic
34	C₂₅₇	C₂×C₄⋊C₈	1	1	yes	characteristic, complemented, Sylow
35	C₂×C₄⋊C₈	—	257	1	no	maximal, Sylow
36	C₂²×C₈	—	257	2	no	—
37	C₂×C₄²	—	257	1	no	—
38	C₄⋊C₈	—	257	4	no	—
39	C₂²×C₄	—	257	1	no	—
40	C₂²×C₄	—	257	1	no	—
41	C₂²×C₄	#11759967	1	1	yes	characteristic
42	C₂×C₈	—	257	4	no	—
43	C₂×C₈	—	514	4	no	—
44	C₄²	—	257	2	no	—
45	C₄²	—	257	2	no	—
46	C₂³	C₂×#11759967	1	1	yes	characteristic
47	C₂×C₄	—	257	2	no	—
48	C₂×C₄	—	257	2	no	—
49	C₂×C₄	—	257	4	no	—
50	C₂×C₄	—	257	1	no	—
51	C₂×C₄	—	257	1	no	—
52	C₂×C₄	—	257	2	no	—
53	C₂×C₄	—	2	2	no	—
54	C₂×C₄	C₂×#11759967	1	2	yes	—
55	C₈	—	514	4	no	—
56	C₂²	C₄⋊#11759967	1	2	yes	—
57	C₂²	#16861626	1	2	yes	—
58	C₂²	#16861627	1	2	yes	—
59	C₂²	C₂²×#11759967	1	1	yes	characteristic
60	C₄	—	257	1	no	—
61	C₄	—	257	2	no	—
62	C₄	—	257	1	no	—
63	C₄	—	257	4	no	—
64	C₄	—	2	2	no	—
65	C₂	#22551659	1	4	yes	direct product factor
66	C₂	C₂×C₄⋊#11759967	1	1	yes	characteristic
67	C₂	C₂×#16861626	1	1	yes	characteristic
68	C₂	C₂×#16861627	1	1	yes	characteristic

	subgroup	G/H
center	C₂³	C₂×#11759967
commutator	C₂×C₂₅₇	C₂²×C₈
Frattini	C₂²	C₂²×#11759967
Fitting	C₂²×C₄×C₂₅₇	C₄
socle, prime radical	C₂³×C₂₅₇	C₂×C₄
cosocle	C₂×Dic₂₅₇	C₂³
hypercenter	C₂²×C₄	#11759967
hypocenter	C₂₅₇	C₂×C₄⋊C₈
LCS	G ▷ C₂×C₂₅₇ ▷ C₂₅₇
UCS	C₁ ◁ C₂³ ◁ C₂²×C₄

Complements

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

N	H ≅ G/N	type
2. #22551659	C₂	direct (N × H)
12. C₂×Dic₂₅₇	C₈	semidirect
27. Dic₂₅₇	C₂×C₈	semidirect
30. C₂×C₂₅₇	C₄⋊C₈	semidirect
34. C₂₅₇	C₂×C₄⋊C₈	semidirect
65. C₂	#22551659	direct (N × H)

Maximal subgroups

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

subgroup	index
C₂²×#14523346	2
#22551659	2
C₂×C₄×Dic₂₅₇	2
C₂×C₄⋊C₈	257

Subgroups — C2×#22551659 #30657739

Conjugacy classes of subgroups

Complements

Maximal subgroups

Subgroups — C₂×#22551659 #30657739