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Prime Number Spiral v7.00 by Hermetic Systems

For exploring the Prime Number Spiral. Prime Number Spiral Hermetic Systems

Program type: Shareware

Developer Name: Hermetic Systems

Release Date: 2006-01-07

System requirements:
Win95, Win98, WinME, WinXP, WinNT 4.x, Windows2000, Windows2003
A video resolution of 800x600 or better.

Limitations: Some options and functions disabled.

Program cost: $15 (click to order)

pns_setup.zip

File size: 1666Kb

Install support: Install and Uninstall

Program language: English, German

What is new: Added ability to ascertain number at a location in the grid.

The Prime Number Spiral (a.k.a. the Ulam Spiral) is formed by marking the prime numbers in a spiral arrangement of the natural numbers. This is software is for exploring the Prime Number Spiral.

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Description of Prime Number Spiral v7.00

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.

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