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Originally shared by Paul SalomonOn this week's Math Munch:
The mathematics of piling up sand, including a new game, Hexplode; a website full of prime number facts and unsolved problems; and finally a breakthrough in color-coding. How 6-dimensional colorings work.![](http://i1.wp.com/mathmunch.files.wordpress.com/2012/11/mysandpile.png?fit=400%2C400)
The mathematics of piling up sand, including a new game, Hexplode; a website full of prime number facts and unsolved problems; and finally a breakthrough in color-coding. How 6-dimensional colorings work.
Sandpiles, Prime Pages, and Six Dimensions of Color
![](http://i1.wp.com/mathmunch.files.wordpress.com/2012/11/mysandpile.png?fit=400%2C400)
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