Daniel Andrew "Andy" Beal (born November 29, 1952) is a Dallas-based businessman who accumulated wealth in real estate and banking. Born and reared in Lansing, Michigan, Beal is founder and chairman of Beal Bank and Beal Bank USA, as well as other affiliated companies. Beal has an estimated worth of USD$8.4 billion as of September 2012.A self-taught number theorist, Beal is also known for the Beal conjecture, a mathematical generalization of Fermat's Last Theorem. He has funded a USD$1,000,000 standing prize for its proof or disproof. His banks also sponsor two annual science and technology fairs affiliated with the International Science & Engineering Fair. Beal also participated in some high-stakes poker games in the mid-2000s that were the subject of a book.