2015 was Post Malone’s breakout year, the year he turned 20. It was the same year Moses Malone died. And Moses Malone died 71 days after Post’s birthday, the 20th prime.
Moses = 71
Death = 20
Moses Malone has the Philadelphia connection, and Post Malone’s big song that year was “White Iverson,” connecting with Allen Iverson, the Philadelphia basketball star.