Prime Number Spiral Publisher's description:

from Hermetic Systems

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.

System Requirements:

A video resolution of 800x600 or better.
Program Release Status: Minor Update
Program Install Support: Install and Uninstall

Prime Number Spiral Version History:

Prime Number Spiral 8.01 added on: 17-11-2008 - actual version
Prime Number Spiral 7.91 added on: 23-07-2008
Prime Number Spiral 7.80 added on: 16-03-2008
Prime Number Spiral 7.79 added on: 17-02-2008