In mathematics. Historically, in the Pyramid formation that position names are taken from, a left wing-forward in football wears number 11. 11 is a Strmer number, a Heegner number, and a Mills prime. M. At the time, it was known as the Year of the Consulship of Lepidus and Taurus (or, less frequently, year 764 Ab urbe condita). External links. Millennium: 1stmillennium Centuries: 1stcenturyBC 1stcentury 2ndcentury Decades: 10sBC 0sBC 0s 10s 20s 30s 40s Years: 8AD 9AD 10AD 11AD 12AD 13AD 14AD . Name. Please help improve this article by adding citations to reliable sources.