Well telling us what cpu you have would help. If its a somewhat modern intel cpu with the stock cooler those temps are just fine for a stress test.
Hey i have the i5-6500 with the stock cooler, idk why prime95 was kinda over-torturing it. Heavy load and a bunch of other programs stress test it and the temperature doesn't go above 70. The room temperature is 48c where I live so i think its quite normal