[nfoz]

I suspect your concept of memory is incorrect. Outside of rare people with deep automatic synaesthesia or other sever mental differences, I don't think there's much variation in different peoples' inherent "ability to remember". People aren't generally better or worse at remembering things by some innate property of their brain. It is a skill, and one can practice and improve at it, and there are lots of very powerful memory techniques, especially including specific problems like "memorizing digits".

I strongly recommend the book "Moonwalking with Einstein" which was very enlightening for me.