PRINCE2 is based on seven principles, seven themes and seven processes

https://en.wikipedia.org/wiki/PRINCE2

The seven principles are:

  1. Continued Business Justification
  2. Learn from Experience
  3. Defined Roles and Responsibilities
  4. Manage by stages
  5. Manage by Exception
  6. Focus on Products
  7. Tailor to Suit the Project Environment

The seven themes are:

  1. Business case
  2. Organization
  3. Quality
  4. Plans
  5. Risk
  6. Change
  7. Progress

The seven Processes are

  1. Starting up a Project
  2. Directing a Project
  3. Initiating a Project
  4. Controlling a Stage
  5. Managing Product Delivery
  6. Managing a Stage Boundary
  7. Closing a Project