Download 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.

Program system requirements: A video resolution of 800x600 or better.

New in this version: Minor improvement to activation process.

Size

1.38 MB

License

Shareware

Price

15.00 USD

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Operating System

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

Languages

Developer

Hermetic Systems (» more programs)

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Prime Number Spiral Program Releases History

Software:	Prime Number Spiral 7.79
Update date:	2008-02-18 03:29:00
Release Notes:	Minor improvements.
Software:	Prime Number Spiral 7.67
Update date:	2007-10-20 06:45:00
Release Notes:	Improved activation-key-request window.
Software:	Prime Number Spiral 7.57
Update date:	2007-09-22 12:03:00
Release Notes:	Minor improvements.
Software:	Prime Number Spiral 7.42
Update date:	0000-00-00 00:00:00
Release Notes:	Minor improvements.

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