Thus in the 4th to 6th centuries there were the primicerii of the protectores domestici and of the Scholae Palatinae, but also primicerii in charge of the armament factories (fabricae), which, like the Scholae, where under the jurisdiction of the magister officiorum.
Jadi pada abad ke-4 hingga ke-6 ada primicerii dari protectores domestici dan Scholae Palatinae, tetapi juga primicerii yang bertanggung jawab atas pabrik-pabrik persenjataan (fabricae), yang, seperti Scholae, di mana di bawah yurisdiksi magister officiorum.