Claim: Paul McCartney has written or co-written 32 songs that have reached number one on the Billboard Hot 100.
Evidence: A two-time inductee into the Rock and Roll Hall of Fame -LRB- as a member of the Beatles in 1988 , and as a solo artist in 1999 -RRB- , and a 21-time Grammy Award winner , McCartney has written , or co-written , 32 songs that have reached number one on the Billboard Hot 100 , and he has 25.5 million RIAA-certified units in the United States.