Extensions 1→N→G→Q→1 with N=C₂ and Q=D₁₂₃

Direct product G=N×Q with N=C₂ and Q=D₁₂₃

		d	ρ	Label	ID
D₂₄₆		246	2+	D246	492,11

Non-split extensions G=N.Q with N=C₂ and Q=D₁₂₃

extension	φ:Q→Aut N	d	ρ	Label	ID
C₂.D₁₂₃ = Dic₁₂₃	central extension (φ=1)	492	2-	C2.D123	492,3

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Extensions 1→N→G→Q→1 with N=C2 and Q=D123