Combine the olive oil, soy sauce, garlic, black pepper, rosemary, thyme, and salt in a bowl to create the marinade.
Place the prime rib roast on a wire rack in a large roasting pan.
Pour half of the marinade over the top side of the rib and rub it in thoroughly.
Flip the prime rib over and pour the remaining marinade, making sure to coat evenly.
Cover the roasting pan and refrigerate the marinated prime rib overnight to allow the flavors to meld.
Preheat your oven to 450 degrees Fahrenheit.
Place the marinated prime rib roast in the preheated oven and bake for 30 minutes until the exterior is browned and seared.
Lower the oven temperature to 325 degrees Fahrenheit and continue cooking for about 1.5 hours or until the internal temperature reaches your desired doneness (medium-rare is about 135 degrees Fahrenheit).
Remove the prime rib from the oven and let it rest for 15 minutes before slicing to retain its juices.