Look up fifteen in Wiktionary, the free dictionary. The Fifteen, the Jacobite rising of 1715 where the House of Stuart attempted to regain the throne 15 min meal the United Kingdom. This disambiguation page lists articles associated with the same number. If an internal link led you here, you may wish to change the link to point directly to the intended article.

A triangular number, a hexagonal number, and a centered tetrahedral number. The number of partitions of 7. The smallest number that can be factorized using Shor’s quantum algorithm. The magic constant of the unique order-3 normal magic square. The other such number is 13. The first 15 superabundant numbers are the same as the first 15 colossally abundant numbers. The only other number with this property is 27.