Question: songs that have been number 1 more than once?
Answer: Chubby Checker – The Twist (1960 and 1961) (#1 both times)
Ben E. ... 
The Contours – Do You Love Me (#3 in 1962 and #11 in 1988)
Bobby “Boris” Pickett & Crypt-Kickers – Monster Mash (#1 in 1962 and #10 in 1973)
The Safaris – Wipeout (#2 in 1963 and #16 in 1966)