Oh really? Well then, why did Peter and the other Apostles have anything to do with Paul if he supposedly was a "false prophet"?
Also, if not from the Bible, where are you getting your "information" from?
Your information is coming from Paul, and his supposed associate Luke. Who is Luke, and what did he actually see". According to Luke 1, he witnessed nothing, and his source had to be Paul with respect to the wilderness excursion. If some guy named Luke wrote Acts, there were two contravening accounts on the wilderness excursion. As for Galatians, which had Paul denigrating the "supposed" "pillars" of the church, Peter, John and James, well that would be Paul's side of the story. As for 2 Peter, that was written by some unknown writer, which would be a fraud on face value. As for why Paul was not outed, if you read Matthew 13, Paul a main tare, spreading the tare seed, the disciples/farm workers, were forbidden to touch the tares until the "end of the age". Well behold, we are at the end of the age, and Paul, the one who does lawlessness, and Peter, the "stumbling block" are being gathered out (Matthew 13:39-41).