Extensions 1→N→G→Q→1 with N=C250 and Q=C2

Direct product G=N×Q with N=C250 and Q=C2
dρLabelID
C2×C250500C2xC250500,5

Semidirect products G=N:Q with N=C250 and Q=C2
extensionφ:Q→Aut NdρLabelID
C250⋊C2 = D250φ: C2/C1C2 ⊆ Aut C2502502+C250:C2500,4

Non-split extensions G=N.Q with N=C250 and Q=C2
extensionφ:Q→Aut NdρLabelID
C250.C2 = Dic125φ: C2/C1C2 ⊆ Aut C2505002-C250.C2500,1

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