These positions are from the Digital Chart
1. Hold It Against Me - Britney Spears 411.000
2. Grenade - Bruno Mars 219.000
3. Black And Yellow - Wiz Khalifa - 190.000
4. Firework - Katy Perry 184.000
5. Tonight (I'm Loving You) - Enrique Iglesias 182.000
6. What The Hell - Avril Lavigne 163.000
7. The Time - The Black Eyed Peas 157.000
8. 6 Foot 7 Foot - Lil Wayne 146.000
9. We R Who We R 141.000
10. H.A.M. - Kanye West & JayZ 125.000
*Thanks to both Chemist & zzmyth for the FULL Top 10 list 
*
This is Spears' best sales week for a digital song, but also the largest debut for a woman as a lead artist in the US.
for Wiz...that song has slowly been working it's way up...congrats to Britney too for #1, but hopefully my fave will take it back next week 