The release is Notorious B.I.G.'s third chart-topper and second posthumously. The rapper, born Christopher Wallace, was gunned down 10 years ago on March 9, 1997.
For the first time since November, five of the album chart's top 10 are debuts.
Arcade Fire bowed in at No. 2 with "Neon Bible."
After leading the chart for a week, Chris Daughtry's self-titled RCA debut "Daughtry" slipped to No. 3, while Akon's "Konvicted" dropped to No. 4 from the third spot.
Country singer Gary Allan's "Greatest Hits" debuted at No. 5.
Debuting at No. 6 was Relient K's "Five Score and Seven Years Ago."
Norah Jones' "Not Too Late" tumbled from No. 2 to No. 7 and Fall Out Boy's "Infinity on High" sank to No. 8 from No. 4.
Hard-rocking Korn earns its seventh top 10 hit with "MTV Unplugged" in the No. 9 slot.
Robin Thicke's "The Evolution of Robin Thicke" rounded out the top 10, slipping from No. 5 to No. 10.