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 of 15 minute meal 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.