Even with only a few commercially ready songs from her most recent album, Prism, Katy is still breaking records. As 'Dark Horse' reigns for a fourth week, Perry rewrites the mark for the most total weeks (46) at No. 1 in the airplay chart's archives Katy Perry claims the record for the most weeks at No. 1 in the 21-year history of Billboard's Pop Songs radio airplay chart all to herself, as "Dark Horse," featuring Juicy J, spends a fourth week on top, upping her career count to 46 weeks at No. 1. With her latest frame in the lead, Perry passes Mariah Carey, who's totaled 45 weeks at No. 1. Here's an updated look at the acts to spend the most time at No. 1 dating to the Oct. 3, 1992, launch of the Nielsen BDS-based tally, which measures the most weekly plays at mainstream top 40 stations: Weeks at No. 1, Artist 46, Katy Perry 45, Mariah Carey 32, P!nk 32, Rihanna 29, Ace of Base 26, Maroon 5 25, Christina Aguilera 23, Beyonce 23, Boyz II Men 23, Nelly Source