The Beatles at the BBC Television Studios in London before the start of their world tour, June 17, 1966.

As The Beatles make their debut on streaming services on Dec. 24, what better time to tally up the Fab Four's biggest singles on the Billboard Hot 100 chart?

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The quartet -- George Harrison, John Lennon, Paul McCartney and Ringo Starr -- made their Billboard chart debut on the Hot 100 dated Jan. 18, 1964 with "I Want To Hold Your Hand." The single would quickly become their first No. 1, sailing to the top on Feb. 1, 1964.

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The group racked up a record total of 20 No. 1s, including such classics as "Hey Jude," "A Hard Day's Night" and "Let It Be." The Beatles' impact on the Hot 100 was so huge, in 2015 they were named as the top-performing act in the chart's history.

The Beatles' 50 Biggest Billboard Hits is based on actual performance on the weekly Billboard Hot 100 chart. Songs are ranked based on an inverse point system, with weeks at No. 1 earning the greatest value and weeks at No. 100 earning the least. To ensure equitable representation of the biggest hits from each era, certain time frames were weighted to account for the difference between turnover rates from those years.