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Riesel Prime Search
Riesel Prime Search (RPS) is a prime searching project established in 2005 by Predrag Minovic (Kosmaj).
The project description is as follows:
- The project is searching for Riesel primes k•2n-1, k > 1.
- We have three subprojects as follows.
- k-values that can produce many primes in the given range of exponent n
- Low-weight k-values that produce a very small number of primes (opposite to (1) above)
- Small k < 300 (with exception of those k-values already reserved by other projects)
Drive overview
| Drive | Start | End | #k | k-range | n-range | #primes | Purpose |
|---|---|---|---|---|---|---|---|
| Drive 1 | 2005-10-31 | 2006-08-02 | 16 | 67342275 - 3467560635 | 201700 - 400000 | 103 new / - confirmed | Riesel primes for high weighted k's |
| Drive 2 | 2006-03-18 | 2006-08-13 | 20 | 107 - 239 | 210000 - 600000 | 56 new / 5 confirmed | Riesel primes for k's < 300 |
| Drive 3 | 2006-04-27 | 2009-03-01 | 36 | 389152177 - 857656417 | 1105000 - 2000000 | - new / - confirmed | Riesel primes for low weighted k's |
| Drive 4 | 2006-07-28 | 2006-12-16 | 21 | 91 - 299 | various - 600000 | 35 new / - confirmed | Riesel primes for k's |
| Drive 5 | 2006-11-12 | 2008-07-04 | 14 | 51 - 291 | various - 1000000 | 57 new / 4 confirmed | Riesel primes for k's < 300 divisible by 3 |
| Megabit 2 | 2011-04-28 | 2022-04-10 | 30 | 115 - 193 | 1000000 - 2300000 | 50 new / - confirmed | Riesel primes for k's < 300 |
| k=5 | 2007-10-03 | 2021-09-17 | 1 | 5 | 470000 - 6000000 | 4 new / - confirmed | Riesel primes for k = 5 |
External links
Riesel Prime Search
Projects
| Ongoing |
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| Terminated |
