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The Ulam Prime Spiral

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Inspired by the square spiral of Stanislaw Ulam, the prime numbers are plotted on a spiral number line. Each prime on the wound line is marked with a dot. Adjusting the tightness of the winding and the density allows different patterns to emerge.

Contributed by: Christopher Skiscim (June 2008)
Based on a program by: Greg Keogh
Open content licensed under CC BY-NC-SA

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For the original inspiration, see http://www.orthogonal.com.au/hobby/mm/images/index.htm.

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