What is the significance of No. 61 Trabzonspor jersey worn by Salah?

Mohamed Salah was seen donning a number 61 jersey in a post announcing his arrival at Trabzonspor. According to talkSPORT, the number is significant as Trabzonspor fans celebrate with fireworks, confetti and chants when the clock hits 61st minute in every match. Also, 61 is area code of their home city Trabzon. However, Salah's official squad number hasn't been confirmed.