As PrimeGrid continues to add projects, more pressure is placed on the sieving aspect to keep up with growth. Therefore, PrimeGrid is in a continuous need of sievers...both manual and BOINC.
Currently, there are seven sieving efforts underway...including both BOINC and manual. Some are long term sieves like the combined Prime Sierpinski Project and Seventeen or Bust sieve. Others are shorter, like Proth Sieve, having ending dates within the next several months. However, all of them need help.
Currently, a few of the sieves have been prioritized depending on the demand of primality testing. The top three priorities are:
1. Proth Sieve - BOINC
2. 321 Sieve - Manual (manual credit/cobblestones available)
3. Prime Sierpinski Project (Seventeen or Bust) Sieve - BOINC and Manual
If anyone is interested, please see this post for more details: Calling All Sievers
Thank you for your consideration.