Does anyone else still remember their ex's phone number?

Him and I were together for two years and I still remember the moment we exchanged phone numbers. We remembered each other's numbers even though we had one another saved as contracts on our phones. We both decided to go no contact and block/delete to move forward with our lives and healing from each other. I miss his voice, his "good morning/good night texts", and most of all, him. We were each other's person and now we're strangers. Sometimes I wish I could forget his number, but I often find myself repeating it over and over in my mind. Sometimes I wish that I didn't have such a good memory either.