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 Prime Number Spiral

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.

Requirements: 800x600 or better video card
Trial version Limitations: Some options and functions limited.

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Quick facts
Product Prime Number Spiral
Version 8.72
Publisher Hermetic Systems
Platform Windows 7/Vista/XP/2000/98
Filesize 1,598 K
Released 25-Dec-2013
License Shareware
Cost $9.95
Expires Never Expires
Homepage http://www.hermetic.ch/pns/pns.htm
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Downloads 161 (0)
Rating 0 (0)
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