I have patchy memories of events before my 3rd birthday, and can remember bits of that birthday and Christmas. I remember my first day at school and what I was wearing that day, and the buttons on the cardigan of another girl who started in the same class the following term! I remember things that happened during that year at school, which I'm sure everybody else will have forgotten! Needless to say, I can tell you who all my teachers were right through school and college, and what subjects they taught. However, meet me, say in church, and tell me your name, and by next week, I will have forgotten it!
I don't remember long numbers unless I make a conscious effort to do so, or hear them so many times, I can't help remembering them. Give me 2 or 3 Bible passages to look up, and I'll have to ask you to repeat them separately, each one when I'm ready to find it. I'm getting better, but if you ask me where something is in the Bible, I can tell you if it'd Old or New Testament, and probably if it's in the Gospels or epistles, but that's about it. I have learnt where some of my favourites are recently, but it's a long haul - one in Jeremiah, I still keep forgetting exactly where in that book it is, and it's a long book to try to find it! I do have a couple of books on where to find it in the Bible, but they don't have everything in them.
At least reading up on autism has explained why the above happens, and I'm not alone in this.