"3's & 7's" is the second single by Queens of the Stone Age from their 2007 album Era Vulgaris. It was released on June 4, 2007 and followed the digital download-only "Sick, Sick, Sick". The single has debuted at number one on the United Kingdom rock chart and at number nineteen on the official UK top 40 singles chart.
"3's & 7's" is featured in Madden 08 and was the very first song announced in music video game Guitar Hero III: Legends of Rock. Additionally, the song — along with Queens of the Stone Age's other songs "Sick, Sick, Sick" and "Little Sister" — appeared as downloadable content for the music video game Rock Band, in a three-song pack, with "Go With the Flow" being featured in the core game. The song also made a brief appearance at the beginning of the second episode of the CW series Reaper.
