Prime Number Spiral 7.79

Prime Number Spiral screenshot 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.

Latest changes:
Minor improvements.

License: Shareware $16 (GBP 8)
OS: Win95,Win98,WinME,WinNT 4.x,WinXP,Windows2000,Windows2003,Windows Vista Starter,Windows Vista Home Basic,Windows Vista Home Premium,Windows Vista Business,Windows Vista Enterprise,Windows Vista Ultimate
File size: 1.4 MB
Download: Download Prime Number Spiral Download link
Homepage: Prime Number Spiral homepage Prime Number Spiral homepage
Category: Education/Mathematics
Install support: Install and Uninstall
Requirements: A video resolution of 800x600 or better.