Acts w/ Most Weeks T10 on Hot 100:
Rihanna — 312 Weeks
Usher — 273 Weeks
Mariah Carey — 266 Weeks
Madonna — 255 Weeks
Janet Jackson — 219 Weeks
The Beatles — 212 Weeks
Katy Perry — 189 Weeks
Whitney Houston — 183 Weeks
Michael Jackson — 181 Weeks
Bruno Mars — 176 Weeks
I'm surprised @ Usher being #2.
Rih, Bruno, and Katy will be the T3 by next decade mess. Bruno literally making T10 in 5 years.