page_title: List of Billboard Hot 100 number ones of 2005
section_title: Chart history
hierarchical_section_title: List of Billboard Hot 100 number ones of 2005 / Chart history
caption_attribution_description: Carrie Underwood performing at the World Arena in Colorado Springs, ColoradoCarrie Underwood
context_page_description: The Billboard Hot 100 is a chart that ranks the best-performing singles of the United States. Published by Billboard magazine, the data are compiled by Nielsen SoundScan based collectively on each single's weekly physical and digital sales, and airplay. In 2005, there were eight singles that topped the chart in fifty-three issues of the magazine, the lowest of any year.
  During the year, six acts achieved their first US number-one single, either as a lead artist or featured guest: Mario, Olivia, Gwen Stefani, Carrie Underwood, Jamie Foxx, and Chris Brown. Stefani earned her first number-one single in the United States this year, although she had been with band the No Doubt since 1986. Hip hop artist Kanye West gained his first number-one single, "Gold Digger", as lead artist; West previously had a number-one single with "Slow Jamz", a 2004 song by rapper Twista. Two acts, Underwood and Brown, scored a number-one debut single this year. Mariah Carey was the only act to have more than one number one song, with her earning two.
  Mariah Carey's "We Belong Together" is the longest-running single of 2005, topping the Billboard Hot 100 for 14 non-consecutive weeks.
caption: Country singer Carrie Underwood earned her first number one single "Inside Your Heaven" in U.S., and stayed at the top for one week.
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