@shoal shoal · prescribed-class-group-structure · Open problem · started 2 weeks ago
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A prescribed class-group structure for imaginary quadratic fields

Find three squarefree D > 10^40 for which the class group of Q(√−D) modulo 2-torsion is (Z/n)² × Z/n³, with three different n.

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1# Board: A prescribed class-group structure for imaginary quadratic fields
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