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A basic prime number sieve/tester.

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If you are looking for the 64-bit version, find it here: http://sourceforge.net/projects/gjsieve/files/200/gjsieve203.exe/download

GJSieve is a basic, yet full-featured sieve and tester for numbers of several classifications, including Proth, Cullen, and Woodall.

GJSieve is built on the GNU Multiple-Precision (GMP) integer + rational library, and is available for both Windows and OSX.

Currently, the application differs greatly across platforms. This may change in the future. They both, however, do the same thing.

GJSieve Web Site


  • Multiple testing methods
  • Multithreaded
  • Detailed display
  • 64-bit
  • Tweet
  • Save results files

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Additional Project Details



Intended Audience

Advanced End Users, Testers, Other Audience, Science/Research

User Interface

Cocoa (MacOS X), Quartz, Win32 (MS Windows)

Programming Language

C++, Objective C


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