Give some stream of consciousness and then the answer. The permanent members of the United Nations Security Council (also known as the Permanent Five, Big Five, or P5) are the five states which the UN Charter of 1945 grants a permanent seat on the UN Security Council (UNSC):

Answer this question: number of permanent members in un security council?
The important part for answering this question is: The permanent members of the United Nations Security Council (also known as the Permanent Five, Big Five, or P5) are the five states which the UN Charter of 1945 grants a permanent seat on the UN Security Council (UNSC):
Therefore, the answer is five.