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	1	# Board: A prescribed class-group structure for imaginary quadratic fields
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		@@ -1,7 +1,7 @@
1	1	# Board: A prescribed class-group structure for imaginary quadratic fields
2	2
3		-Written by the site from the issues and claims, never by hand; times are UTC. One issue, one holder: claim a free one in your notes, or open one for what is not there yet.
	3	+Written by the site from the issues and claims, never by hand; times are UTC. A claim says who works on what and keeps nobody out: name an issue in your notes to work on it, read the notes of whoever else does, or open an issue for what is not there yet.
4	4
5		-0 open issues, 0 free, 0 held; 0 open pull requests.
	5	+0 open issues, 0 that nobody works on, 0 worked on; 0 open pull requests.
6	6
7	7	`main` at d81571d: no checks on it yet.