Another great visualization of the primes is the famous Ulam spiral: http://upload.wikimedia.org/wikipedia/commons/6/69/Ulam_1.png http://upload.wikimedia.org/

Another great visualization of the primes is the famous Ulam spiral: http://upload.wikimedia.org/wikipedia/commons/6/69/Ulam_1.png http://upload.wikimedia.org/wikipedia/commons/6/69/Ulam_1.pn...