<Table> <Tr> <Td> </Td> <Td> This article needs additional citations for verification . Please help improve this article by adding citations to reliable sources . Unsourced material may be challenged and removed . (December 2012) (Learn how and when to remove this template message) </Td> </Tr> </Table> <Tr> <Td> </Td> <Td> This article needs additional citations for verification . Please help improve this article by adding citations to reliable sources . Unsourced material may be challenged and removed . (December 2012) (Learn how and when to remove this template message) </Td> </Tr> <Table> <Tr> <Th_colspan="2"> The X Factor </Th> </Tr> <Tr> <Td_colspan="2"> </Td> </Tr> <Tr> <Th> Genre </Th> <Td> Reality television </Td> </Tr> <Tr> <Th> Created by </Th> <Td> Simon Cowell </Td> </Tr> <Tr> <Th> Creative director (s) </Th> <Td> <Ul> <Li> Brian Friedman </Li> <Li> Jamie King </Li> </Ul> </Td> </Tr> <Tr> <Th> Presented by </Th> <Td> <Ul> <Li> Steve Jones </Li> <Li> Mario Lopez </Li> <Li> Khloé Kardashian - Odom </Li> </Ul> </Td> </Tr> <Tr> <Th> Judges </Th> <Td> <Ul> <Li> Simon Cowell </Li> <Li> L.A. Reid </Li> <Li> Paula Abdul </Li> <Li> Cheryl </Li> <Li> Nicole Scherzinger </Li> <Li> Britney Spears </Li> <Li> Demi Lovato </Li> <Li> Kelly Rowland </Li> <Li> Paulina Rubio </Li> </Ul> </Td> </Tr> <Tr> <Th> Composer (s) </Th> <Td> Simon Cowell </Td> </Tr> <Tr> <Th> Country of origin </Th> <Td> United States of America </Td> </Tr> <Tr> <Th> Original language (s) </Th> <Td> English </Td> </Tr> <Tr> <Th> No. of seasons </Th> <Td> </Td> </Tr> <Tr> <Th> No. of episodes </Th> <Td> 80 </Td> </Tr> <Tr> <Th_colspan="2"> Production </Th> </Tr> <Tr> <Th> Executive producer (s) </Th> <Td> <Ul> <Li> Simon Cowell (uncredited) </Li> <Li> Cecile Frot - Coutaz </Li> <Li> Siobhan Greene </Li> <Li> Richard Holloway </Li> <Li> Andrew Llinares </Li> <Li> Rob Wade </Li> </Ul> </Td> </Tr> <Tr> <Th> Location (s) </Th> <Td> <Ul> <Li> Various (auditions) </Li> <Li> CBS Television City (live shows) </Li> </Ul> </Td> </Tr> <Tr> <Th> Running time </Th> <Td> 60--150 minutes </Td> </Tr> <Tr> <Th> Production company (s) </Th> <Td> <Ul> <Li> FremantleMedia North America </Li> <Li> Syco Entertainment </Li> </Ul> </Td> </Tr> <Tr> <Th> Distributor </Th> <Td> FremantleMedia Enterprises </Td> </Tr> <Tr> <Th_colspan="2"> Release </Th> </Tr> <Tr> <Th> Original network </Th> <Td> Fox </Td> </Tr> <Tr> <Th> Picture format </Th> <Td> 720p (16: 9 HDTV) </Td> </Tr> <Tr> <Th> Original release </Th> <Td> September 21, 2011 (2011 - 09 - 21)--December 19, 2013 (2013 - 12 - 19) </Td> </Tr> <Tr> <Th_colspan="2"> Chronology </Th> </Tr> <Tr> <Th> Related shows </Th> <Td> The X Factor (UK) </Td> </Tr> <Tr> <Th_colspan="2"> External links </Th> </Tr> <Tr> <Th> Official website </Th> <Td> www.thexfactorusa.com </Td> </Tr> </Table> <Tr> <Th_colspan="2"> The X Factor </Th> </Tr>

Who were the judges on the x factor