When arranging the natural numbers in a spiral and emphasizing the prime numbers, an intriguing and not fully explained pattern is observed, called the Ulam spiral.
SB: crislemon | TumblrAB: [COLIN] (fascinating, thank you!) 

When arranging the natural numbers in a spiral and emphasizing the prime numbers, an intriguing and not fully explained pattern is observed, called the Ulam spiral.

SB: crislemon | Tumblr
AB: [COLIN] (fascinating, thank you!)