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PSearch is a distributed computing project in search of the largest Proth primes.


This project is terminated.

Client Software

This project currently uses Jean Penné's program, LLR. Previously this project was using George Woltman's PRP.


Date News Number Discoverer Comments
2002-05-22 New prime Proth 32883•21000004+1 Bob Cousins At this date, it was the 15th largest prime number, and the 2nd largest Proth prime number.
2002-03-12 New prime Proth 129927•2344000+1 Bob Cousins At this date, it was the 84th largest prime number.
2002-02-17 New prime Proth 67385•2200151+1 Robert van der Peijl At this date, it was around the 331st largest prime number.
2002-02-11 Start of our group effort.

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