> -----Oorspronkelijk bericht----- > Van: [email protected] [mailto:programming- > [email protected]] Namens Roger Hui > Verzonden: zaterdag 22 augustus 2009 17:46 > Aan: Programming forum > Onderwerp: Re: [Jprogramming] Unforgettable times (...) > > p.s. In my youth, when I needed to remember a (5-digit) > number for a time, I would try to compute its largest > prime factor by mental calculation. Try it and you'll > see why that works. >
In 'Finding Moonshine - A Mathematician's Journey through Symmetry', Marcus du Sautoy tells that Conway had his computer protected in such a way that it came up with 10 arbitrary dates for which he had to determine the day of the week, within 12 seconds. R.E. Boss ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
