PrimeGrid Challenge Series 2026

[Ken g6]

I want to get something here before the new year, but all I have is from their Discord for now:

2026 preliminary challenge schedule:
january 16: ESP 7d ("World Nothing Day")
march 7: SoB 10d (on the occasion of the 100th anniversary of the first transatlantic phone call)
april 30: Primorial 5d (Factorial if the project starts by then), after Claude Shannon
june 3: 321 7d
august 12: PPSE 3d (perseid meteor shower)
september 7: SR5 5d
october 2: GFN19 5d, after Michio Suzuki
november 6: GCW 7d, after Emma Trotskaia Lehmer
december 18: GFN22 10d (on the occasion of the 100th anniversary of the naming of the photon)

And an old quote:

Scores will be kept for individuals and teams. Only tasks issued AFTER [the challenge start time] and BEFORE [the challenge end time] will be considered for credit. We will be using the same scoring method as we currently use for BOINC credits. A quorum of 2 is NOT needed to award Challenge score - i.e. no double checker. Therefore, each returned result will earn a Challenge score. Please note that if the result is eventually declared invalid, the score will be removed.