| 1 | A | B | C | D | E | F |
| --- | --- | --- | --- | --- | --- | --- |
| 2 | PrimeGrid - Projects |  |  |  |  |  |
| 3 | Project | Active sieve project? | Active LLR project? | Start | End | Best result |
| 4 | 321 Prime Search (primes of the form 3×2n±1) | No | Yes | 30 June 2008 | Ongoing | 3×211895718-1, largest prime found in the 321 Prime Search project |
| 5 | AP26 Search (Arithmetic progression of 26 primes) | N/A | N/A | 27 December 2008 | 12 April 2010 | 43142746595714191 + 23681770×23#×n, n = 0...25 (AP26) |
| 6 | AP27 Search (Arithmetic progression of 27 primes) | N/A | N/A | 20 September 2016 | Ongoing | N/A |
| 7 | Generalized Fermat Prime Search (active: n = 32768, 65536, 131072, 262144, 524288, 1048576, 2097152, 4194304 inactive: n = 8192, 16384) | Yes (manual sieving) | N/A | January 2012 | Ongoing | 9194441048576+1, largest known Generalized Fermat prime |
| 8 | Cullen Prime Search | No | Yes | August 2007 | Ongoing | 6679881×26679881+1, largest known Cullen prime |
| 9 | Message7 | No | N/A | 12 June 2005 | August 2005 | PerlBOINC testing successful |
| 10 | Prime Sierpinski Problem | No | Yes | 10 July 2008 | Ongoing | N/A |
| 11 | Extended Sierpinski Problem | No | Yes | 7 June 2014 | Ongoing | 161041×27107964+1, largest and only prime found in the Extended Sierpinski Problem |
| 12 | PrimeGen | No | N/A | March 2006 | February 2008 | N/A |
| 13 | Proth Prime Search | Yes | Yes | 29 February 2008 | Ongoing | 7×25775996+1 |
| 14 | Riesel Problem | No | Yes | March 2010 | Ongoing | 502573×27181987-1, largest prime found in the Riesel problem |
| 15 | RSA-640 | No | N/A | August 2005 | November 2005 | N/A |
| 16 | RSA-768 | No | N/A | November 2005 | March 2006 | N/A |
| 17 | Seventeen or Bust | No | Yes | 31 January 2010 | Ongoing | 10223 ×2 31172165+1 |
| 18 | Sierpinski/Riesel Base 5 Problem | No | Yes | 14 June 2013 | Ongoing | 301562×52408646−1, largest prime found in the Sierpinski/Riesel Base 5 Problem |
| 19 | Sophie Germain Prime Search | No | Yes | 16 August 2009 | Ongoing | 2618163402417×21290000-1 (2p-1 = 2618163402417×21290001-1), the world record Sophie Germain prime |
| 20 | Twin prime Search | No | N/A | 26 November 2006 | 25 July 2009 | 65516468355×2333333±1 |
| 21 | Woodall Prime Search | No | Yes | July 2007 | Ongoing | 3752948×23752948−1, largest known Woodall prime |
| 22 | Generalized Cullen/Woodall Prime Search | Yes | Yes | 22 October 2016 | Ongoing | N/A |

Question: When was the RSA-640 project finished and what was the next project?
Answer: After RSA-640 was ended in November 2005, the project was moved on to RSA-768.