John Factor (October 8, 1892-January 22, 1984) was a Prohibition-era gangster and con artist affiliated with the Chicago Outfit who spent ten years in federal prison for stock fraud (United Kingdom) and mail fraud (U.S.).
John Factor (October 8, 1892  January 22, 1984), born Iakov Faktorowicz, was a Prohibition-era gangster and con artist affiliated with the Chicago Outfit. 10 years in federal prison (U.S.) Stock fraud (United Kingdom);
Mail fraud (U.S.) 
