Declension table of ?prasiddhatva

Neuter	Singular	Dual	Plural
Nominative	prasiddhatvam	prasiddhatve	prasiddhatvāni
Vocative	prasiddhatva	prasiddhatve	prasiddhatvāni
Accusative	prasiddhatvam	prasiddhatve	prasiddhatvāni
Instrumental	prasiddhatvena	prasiddhatvābhyām	prasiddhatvaiḥ
Dative	prasiddhatvāya	prasiddhatvābhyām	prasiddhatvebhyaḥ
Ablative	prasiddhatvāt	prasiddhatvābhyām	prasiddhatvebhyaḥ
Genitive	prasiddhatvasya	prasiddhatvayoḥ	prasiddhatvānām
Locative	prasiddhatve	prasiddhatvayoḥ	prasiddhatveṣu

Compound prasiddhatva -

Adverb -prasiddhatvam -prasiddhatvāt