Preheat the oven to 450°F (232°C).
In a small bowl, combine minced garlic, olive oil, salt, black pepper, chopped rosemary, chopped thyme, onion powder, and paprika to create a paste.
Place the prime rib roast on a cutting board with the fat side up. Rub the seasoning paste all over the roast, covering the entire surface thoroughly.
Transfer the seasoned roast to a roasting pan, bone side down.
Roast in the preheated oven for 30 minutes to develop a crust.
After 30 minutes, reduce the oven temperature to 325°F (163°C) and continue cooking for another 2 hours or until the internal temperature reaches 130°F (54°C) for medium-rare.
Remove the roast from the oven and cover it loosely with aluminum foil. Let it rest for about 15-20 minutes before slicing to allow the juices to redistribute.
Slice the roast against the grain and serve.