Gnarls Barkley's track Crazy has become the 40th single to stay at number one for seven weeks or more.
Gnarls Barkley vocalist Cee-Lo Green - on top for seven weeks
In April, the US duo's song was the first to get to the top of the chart on download sales alone.
It is the first track to stay at number one for so long since Tony Christie's re-release of (Is This The Way To) Amarillo last year.
US rock band Red Hot Chili Peppers entered the album chart at number one with Stadium Arcadium.
Bryan Adams' (Everything I Do) I Do It For You holds the record for the most consecutive weeks at number one, dominating the charts for 16 weeks in 1991.
Wet Wet Wet's Love Is All Around was at the summit for 15 weeks in summer 1994.
But Frankie Laine's I Believe was at number one for 18 weeks in three separate spells in 1953, a few months after the chart was founded.
In this week's chart, Control Myself, by LL Cool J featuring Jennifer Lopez, has risen from number 15 to number two, while Infernal's From Paris To Berlin is at number three.
The Pet Shop Boys have a new entry at number eight with I'm With Stupid, while the UK's Eurovision entry, Daz Sampson, is new at number 13 with Teenage Life.
Dirty Pretty Things, the band founded by ex-Libertines guitarist and singer Carl Barat, have a new entry at number three in the album chart with Waterloo To Anywhere.