[ARUP and RCRC are correct. Precession or p-factor is a gyroscopic effect caused by the spinning of the propeller. This gyroscopic effect on the airframe causes the aircraft to want to turn to the left. As a result when flying an aircraft one must apply input to the right to compensate.
This is incorrect. This is an incorrect description of p-factor. In fact, most of the post that includes this quote is incorrect.