How many letters did the apostle Paul write and not write?

A:Thirteen epistles are traditionally attributed to St. Paul. The consensus of scholars is that he actually wrote 7 of these: Romans, 1 Corinthians, 2 Corinthians, Philemon, Galatians, Philippians and 1 Thessalonians. He did not write 6 letters attributed to him: Ephesians, Colossians, 2 Thessalonians, 1 Timothy, 2 Timothy and Titus, which are termed the pseudo-Pauline epistles, as they were written in Paul's name.