[2] Like his more-famous older half-brother, Max Factor, he had trained at an early age in haircare,[3] which led to his mob nickname "Jake the Barber".

In 1926, Factor perpetrated a massive stock fraud in England that netted $8 million (equivalent to $110,277,000 in 2023).

[6] He subsequently fled to Monaco and executed another major scam, rigging the tables at the Monte Carlo Casino and breaking the bank.

[8] As Factor was trying to free his son, the Supreme Court held the case over for reargument on October 9.

[10] The FBI believed Jerome's kidnapping was genuine and that the pending extradition made Factor avoid contact with law enforcement.

[18][19] In 1955, Factor took over the running of the Stardust Hotel on the Las Vegas Strip, allegedly as a front man for the Chicago Outfit.

[20][page needed] He was also involved in an attempt to bail out Jimmy Hoffa from his real-estate related financial problems.

[20][page needed] Factor became politically and philanthropically active, and was the largest donor to John F. Kennedy's 1960 presidential campaign.

[18] In late 1962, Factor was again scheduled to be deported to the United Kingdom but received a presidential pardon.

[20][page needed] Factor died from a long, undisclosed illness on January 22, 1984, and was interred at the Hollywood Forever Cemetery in Los Angeles.