Chris Brown; 2 #1's
Run It: 5 weeks
Kiss Kiss: 3 weeks
Total Weeks at #1: 8
Rihanna; 10 #1's
SOS: 3
Umbrella: 7
Take A Bow: 1
Disturbia: 2
Live Your Life: 6
Rude Boy: 5
Love the Way you Lie: 7
Only Girl: 1
What's My Name: 1
S&M: 1
Total Weeks at #1: 34
Katy Perry; 6 #1's
I Kissed a Girl: 7
California Girls: 6
Teenage Dream: 2
Firework: 4
E.T: 5
Last Friday Night: 1
Total Weeks at #1: 25
Fergie (Solo); 3 # 1's
London Bridge: 3
Glamorous: 2
Big Girls Don't Cry: 1
Total Weeks at #1: 6
Lady Gaga; 3 #1's
Just Dance: 3
Poker Face: 1
Born This Way: 6
Total Weeks at #1: 10
Britney Spears; 5 #1's
Baby One More Time: 2
Womanizer: 1
3: 1
Hold It against Me: 1
S&M: 1
Total Weeks at #1: 6
Beyonce; 5 #1's
Crazy In Love: 8
Baby Boy: 9
Check On It: 5
Irreplaceable: 10
Single Ladies: 4
Total Weeks at #1: 36
Mariah Carey; 18 number 1s
Vision Of Love: 4
Love Takes Time: 3
Someday: 2
I Don't Wanna Cry: 2
Emotions: 2
I'll Be There: 2
Hero: 4
Dream Lover: 8
Fantasy: 8
One Sweet Day" (w/ Boyz II Mn): 16
Always Be My Baby: 2
Honey: 2
My All: 1
Heartbreaker: 2
Thank God I Found You: 1
We Belong Together: 14
Don't Forget About Us: 2
Touch My Body: 2
Total weeks at number 1 - 79 weeks
Thanks RatedG
Bruno Mars: 3 #1's
Nothin' On You - 2 weeks
Just The Way You Are - 4 weeks
Grenade - 4 weeks
Total: 10 weeks
Thanks highwind44029
Ke$ha; 2 # 1's
Tik Tok - 9 weeks
We R Who We R - 1 week
Total Weeks at #1: 10
Thanks What It Seems
Lil Wayne; 2 #1's
Lollipop: 5 weeks
Down: 2 weeks
Total Weeks at #1: 7
Thanks YM8
Destiny's Child; 4 # 1's
Bills, Bills, Bills: 1
Say My Name: 3
Independent Women: 11
Bootylicious: 2
Total Weeks at #1: 17
Justin Timberlake; 4 #1's
SexyBack: 7
My Love: 3
What Goes Around Comes Around: 1
Give It To Me (w/ Timbaland & Nelly Furtado) - 2 weeks
Total Weeks at #1: 13
Janet Jackson; 10 # 1's
That's the Way Love Goes -8 weeks
All For You -7 weeks
Miss You Much -4 weeks
Doesn't Really Matter -3 weeks
Escapade -3 weeks -
Together Again -2 weeks
Again - 2 weeks
When I Think of You -2 weeks
Love Will Never Do (Without You) -1 week
Black Cat -1 week
Total Weeks at #1: 33
Thanks skyler_
Eminem; 4 #1's
Lose Yourself: 12
Crack a Bottle: 1
Not Afraid: 1
Love The Way you Lie: 7
Total Weeks at #1: 21
The Beatles; 20 #1s in 6 Years.
Hey Jude: 9 Weeks
I Want To Hold Your Hands: 7 Weeks
Can't Buy Me Love: 5 Weeks
Get Back: 5 Weeks
Yesterday: 4 Weeks
Help!: 3 Weeks
Hello, Goodbye: 3 Weeks
I Feel Fine: 3 Weeks
We Can Work It Out: 3 Weeks
A Hard Day's Night: 2 Weeks
Eight Days A Week: 2 Weeks
Let It Be: 2 Weeks
Paperback Writer: 2 Weeks
She Loves You: 2 Weeks
All You Need Is Love: 1 Week
Come Together: 1 Week
Something: 1 Week
Love Me Do: 1 Week
Penny Lane: 1 Week
Ticket To Ride: 1 Week
Total: 7 weeks
Christina Augilera; 4 #1's
Genie In A Bottle: 5 weeks
What A Girl Wants: 2 weeks
Come On Over Baby: 4 weeks
Lady Marmalade: 5 weeks
Total: 16 weeks
Thanks Vithor
Stevie Wonder; 10 #1's
1. Fingertips - Part 2 - 3 weeks
2. Superstition - 1 week
3. You Are The Sunshine Of My Life - 1 week
4. You Haven't Done Nothin' - 1 week
5. I Wish - 1 week
6. Sir Duke - 3 weeks
7. Ebony and Ivory - 7 weeks
8. Part-Time Lover - 1 week
9. I Just Called to Say I Love You - 3 weeks
10. That's What Friends Are For - 4 weeks
Total: 25 Weeks
Thanks Lately 1814
Usher' 9 #1
Nice & Slow : 2 weeks
U Remind Me: 4 weeks
U got it bad : 6 weeks
Yeah!: 12 weeks
Burn: 8 weeks
Confessions Part II: 2 weeks
My Boo: 6 weeks
Love In this club: 3 weeks
OMG: 4 weeks
Total: 47 weeks
Thanks ILoveUsher
50 Cent - 4 #1's
In da Club: 9 Weeks
21 Questions: 4 Weeks
Candy Shop: 9 Weeks
Crack a Bottle: 1 Week
Total: 23 Weeks
Nelly - 4 #1's
Hot in Herre: 7 Weeks
Dilemma: 10 Weeks
Grillz: 2 Weeks
Shake Ya Tailfeather: 4 Weeks
Total: 23 Weeks
Thanks Staracademy1990 for those two
Thanks everyone who contributed. 
