Subgroups — C₂×C₁₃₉ #63291

Order 278.

4 conjugacy classes of subgroups.

Conjugacy classes of subgroups

#	subgroup	G/H	class size	multiplicity	normal?	properties
1	C₁₃₉	C₂	1	1	yes	maximal, characteristic, direct product factor, Sylow
2	C₂	C₁₃₉	1	1	yes	maximal, characteristic, direct product factor, Sylow

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

N	H ≅ G/N	type
1. C₁₃₉	C₂	direct (N × H)
2. C₂	C₁₃₉	direct (N × H)

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

subgroup	index
C₁₃₉	2
C₂	139