Extensions 1→N→G→Q→1 with N=C₁₂₁ and Q=C₂

Direct product G=N×Q with N=C₁₂₁ and Q=C₂

		d	ρ	Label	ID
C₂₄₂		242	1	C242	242,2

Semidirect products G=N:Q with N=C₁₂₁ and Q=C₂

extension	φ:Q→Aut N	d	ρ	Label	ID
C₁₂₁⋊C₂ = D₁₂₁	φ: C₂/C₁ → C₂ ⊆ Aut C₁₂₁	121	2+	C121:C2	242,1

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