I developed a multithreaded CPU benchmark that calculates PRIME numbers using a multithreaded parallel algorithm written in C++ and assembler. The software calculates prime numbers from 1 to 1.000.000.000 [one billion].
A slider will help you set the exact interval: from 1 to 10.000.000 [ten millions] and up to 1.000.000.000 [1 billion]. The default value of the slider is 100.000.000 [one hundred millions]. In that case, the application will calculate all the prime numbers between 1 and 100 millions.
Also, you can create a datafile that can be used to submit results to HWBOT.