PrimeGrid now has a new project called "Do You Feel Lucky?" This is a world record prime search using GFN-22 with b starting at 846,398, which is the first b not removed by sieving where b^4194304+1 is greater than the current world record. Due to software limitations combined with the size of the numbers involved, this is a GPU-only project. The project will continue separate from the existing GFN22 search, and should the current world record increase, this project will be adjusted to then search beyond that new record.

For the full project details, please see this forum post.

So now "you've got to ask yourself one question: 'Do I feel lucky?' Well, do ya...?"