PrimeGrid's 2025 Challenge Series

World Snake Day Challenge
https://www.primegrid.com/challenge/challenge.php

2026年07月17日(金) 01:00:00 〜 2026年07月22日(水) 00:59:59(JST 日本標準時)
July 16 16:00:00 to July 21 15:59:59 (UTC)
の5日間です。

対象プロジェクト
Factorial (注：CPU演算の方です)

Factorial Prime Search (FPS)
n!±1

Supported platforms:
Windows: 32 bit, 64 bit
Linux: 64 bit
Mac: 64 bit (MacOS 10.14 or higher)
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: 4 days (up to 30 days)

Recent average CPU time: 48:48:50
FFT size: 2x640K (uses up to 10240K cache, estimated)