How to get Nautilus Prime Blueprint in Warframe?

Nautilus Prime Blueprint is an item dropped from Void relics.
You can find the list of relics below, and click on the links to see how to get them.

Relics dropping Nautilus Prime Blueprint

Other items:
Nautilus Prime Cerebrum - Nautilus Prime Systems - Nautilus Prime Carapace
Nautilus Cerebrum - Nautilus Carapace - Nautilus Blueprint