But now Adele's "21" has achieved the same, and with gusto.
As of this week, the British singer's sales are at 1,017,000, surpassing Eminem's current tally of 1,005,000.
Adele's "21" has sold 2.6 million copies total, including digital.
Billboard's Keith Caulfield -- expert in all things Nielsen SoundScan -- told USA Today that fans can expect Lady Gaga's "Born This Way" and Mumford & Sons' "Sign No More" to pass the 1 million digital albums mark by the end of the year. Gaga famously moved more than a million total of her set in its first week. Mumford & Sons has been slowly burning its way up the chart for a year.
As previously reported, sales for the year are up -- but only currently 1% so far, compared to last.