PrimeGrid's 2025 Challenge Series

Telephone Challenge
https://www.primegrid.com/challenge/challenge.php

2026年03月07日(土) 19:00:00 〜 2026年03月17日(火) 18:59:59(JST 日本標準時)
Mar 7 10:00:00 to Mar 17 09:59:59 (UTC)
の10日間です。

対象プロジェクト
SoB

Seventeen or Bust LLR (SOB)
k・2n+1 for k=(21181, 22699, 24737, 55459, 67607)
NOTE: Very long tasks.

Telephone Challenge project

Supported platforms:
Windows: 32 bit, 64 bit
Linux: 32 bit, 64 bit
Mac: 64 bit
Multi-threading is supported and IS recommended. Click here to set the maximum number of threads.
Uses fast proof tasks so no double check tasks are needed. Everyone is "first"!
Deadline: 35 days (up to 140 days)

Recent average CPU time: 334:44:31
FFT sizes: 4096K to 4608K (uses up to 36864K cache per task)
This project has a 50% long job credit bonus and a 10% conjecture credit bonus.