This is the Linux app named Primes to run in Linux online whose latest release can be downloaded as primes.zip. It can be run online in the free hosting provider OnWorks for workstations.
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Primes to run in Linux online
DESCRIPTION:
This project considers the problem of calculating primes as a sorting problem. It includes the most efficient tree-based sorting algorithm that is possible and shows that finding a new prime can be done by sorting the differences between the previous primes in the right way.Unfortunately it has turned out that going this way is even more slowly than trying to find primes by brute force. So it can only be used as a test with heavy load for the sorting algorithm, which can be used for sorting any kind of data. And as already mentioned, it's just the most efficient tree-based sorting algorithm that you can get.
But furthermore this way of finding primes interestingly leaves a hard nut to crack for mathematicians: In very rare cases it finds numbers that are not primes. For all primes below one million this phenomenon arises in exactly two cases:
31213 which is 7 * 7 * 7 * 7 * 13
336141 which is 3 * 3 * 13 * 13 * 13 * 17
Who can explain, why?
Features
- Primes calculator
- Optimal tree-based sorting algorithm
Audience
Information Technology, Science/Research, Developers
User interface
Command-line
Programming Language
C
This is an application that can also be fetched from https://sourceforge.net/projects/primes1/. It has been hosted in OnWorks in order to be run online in an easiest way from one of our free Operative Systems.