Visualizing Prime Numbers
From Jason Davies , we have El Patron de Los Primos , probably one of the coolest prime number visualizer that I've seen. For every Natural number, he draws a periodic curve that intersects at that number and each of its multiples. Needless to say, prime numbers are touched by only two curves (itself and 1 ). You can scroll to the right, and move up the prime food change. (The image above is a screen grab. Go here to see the actual thing)