The Prime Number Spiral (a.k.a. the Ulam Spiral) is constructed as follows: Consider a rectangular grid. We start with the central point and arrange the positive integers in a spiral fashion (anticlockwise). The prime numbers are then marked. There is a tendency for the prime numbers to occur on diagonal lines, however far out into the spiral one goes. This is software is for exploring the Prime Number Spiral. It also (a) allows coloring of the prime numbers in various ways, (b) displays a random arrangement to compare with the primes and (c) shows how square and triangular numbers are located on the spiral.
This software is a commercial software. You will be able to download and test Prime Number Spiral during a certain period of time, then, if it does what you need, you will have to acquire the full version from Prime Number Spiral publisher. The Prime Number Spiral 6.56 free trial version contains an installer and an uninstaller, and has a size of 1700 Kilobytes.
For additional information and support request, please contact directly Prime Number Spiral publisher.
Prime Number Spiral Screenshot
