 During this period, Factor was convicted for mail fraud, his take totaling $10 million.He served 10 years in prison, from 1939 to 1949.In 1955, Factor took over the Stardust Hotel, though he was probably a figurehead for other Chicago mob figures, such as Paul Ricca, Tony "Big Tuna" Accardo, Murray Humphreys and Sam "Momo" Giancana.