Declension table of ?trisāhasra

Neuter	Singular	Dual	Plural
Nominative	trisāhasram	trisāhasre	trisāhasrāṇi
Vocative	trisāhasra	trisāhasre	trisāhasrāṇi
Accusative	trisāhasram	trisāhasre	trisāhasrāṇi
Instrumental	trisāhasreṇa	trisāhasrābhyām	trisāhasraiḥ
Dative	trisāhasrāya	trisāhasrābhyām	trisāhasrebhyaḥ
Ablative	trisāhasrāt	trisāhasrābhyām	trisāhasrebhyaḥ
Genitive	trisāhasrasya	trisāhasrayoḥ	trisāhasrāṇām
Locative	trisāhasre	trisāhasrayoḥ	trisāhasreṣu

Compound trisāhasra -

Adverb -trisāhasram -trisāhasrāt