“Blurred Lines” by Robin Thicke featuring T.I. + Pharrell has sold 5 million copies in just 22 weeks, faster than any other song in digital history. The old record was held by “Somebody That I Used To Know” by Gotye featuring Kimbra, which took 23 weeks that reach that plateau.

“Somebody…” wound up as the #1 best-selling song of 2012. “Blurred Lines” is currently the #2 best-seller of 2013, and is just 702K copies behind the leader, “Thrift Shop” by Macklemore & Ryan Lewis featuring Wanz. (“Blurred Lines” sold 225K copies more than “Thrift Shop” this week, so you can see that it can close that gap pretty quickly.)