Message boards : Science : base S698 (8k)
- n=200-300k, 8k left (8, 23, 34, 91, 124, 140, 143, 158) - runtime 41min-1h18min (AVX@3.8Ghz) 106*698^109564+1 found by CharityEngine2 205*698^122244+1 found by whizbang