The hottest possible temperature is 1,420,000, 000, 000, 000, 000, 000, 000, 000,000,000 degrees Celsius. This occurred but once when the Universe was but .0001 second old. The hottest temperature man ever created was 5,500,000,000,000. This was done at the Large Hadron Collider at CERN in Switzerland.
William Lawrence Sr Omnibit 7-29-15