Tim Duncan announces his retirement today on 7/11/16. Duncan=21 He wore # 21 Spurs=21 U=21 They got knocked out of the playoffs on 5/12/16 or 21 days before the Finals began. He retires 60 days or 1 month 29 days after his final game. I've been seeing 129 and 60 a lot again in recent media. 257 is the 55th prime number. Retirement=55 Tim Duncan=99 Just found it interesting today is also 60 days or 1 month 29 days to 9/9. 1999 the year he won his first championship.