Prime Number Spiral

WorldTimer 5 - The Time Now - Anywhere !!

Prime Number Spiral 6.79

Author	Hermetic Systems
Date	11/20/2005
Size	1664 KB
License	Shareware
Price	US $15
Platform	Win95,Win98,WinME,WinXP,WinNT 4.x,Windows2000,Windows2003
Installation	Install and Uninstall
aFreeGo Rating	Not Rated
Downloads	228
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Minimum Requirements	A video resolution of 800x600 or better.
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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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