So dyscalculia is a new one to me, but I can see where it would be a problem. I feel that I have always had a mild case of dyslexia as well as being on the high functioning end of the Asperger syndrome spectrum. Of course in my youth actual diagnosis of these syndromes was rare. It was more normal to treat the child as being deliberately ornery and try and discipline it out of him.


Sorry no I don't. I may have known what the largest number any of my class was able to come up with back when for that set of numbers, but could not say now. I don't think any of us ever came up with an actual mathematical proof of the largest possible.