From http://mathworld.wolfram.com/PrimeSpiral.html http://mathworld.wolfram.com/PrimeSpiral.html : This construction was first made by Polish-American mathemat

From http://mathworld.wolfram.com/PrimeSpiral.html http://mathworld.wolfram.com/PrimeSpiral.html : This construction was first made by Polish-American mathematician Stanislaw Ulam (1909-1986) in 1963 while doodling during a boring talk at a scientific meeting. Awesome. My new excuse for all those doodles in my engineering notebook: valuable, valuable mathematical research.