# Experimenting with the Ulam Spiral

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The Ulam spiral is named after Stanislaw Ulam, who discovered it by chance in 1963 while doodling on scratch paper at a scientific meeting.

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Contributed by: Giovanna Roda (March 2011)

Open content licensed under CC BY-NC-SA

## Snapshots

## Details

See also:

*Triangle Numbers on Ulam Spiral* by Adrian Leatherland http://yoyo.cc.monash.edu.au/~bunyip/primes/triangleUlam.htm

*Ulam Spiral Images* by Matthew M. Conroy at http://www.madandmoonly.com/doctormatt/mathematics/ulamSpirals/ulamSpirals.htm

Ulam spiral at http://en.wikipedia.org/wiki/Ulam_spiral

## Permanent Citation

"Experimenting with the Ulam Spiral"

http://demonstrations.wolfram.com/ExperimentingWithTheUlamSpiral/

Wolfram Demonstrations Project

Published: March 7 2011