Message boards : Science : base R698 (17k)
- n=150-300k, 17k left (13, 29, 55, 62, 97, 119, 133, 146, 158, 164, 170, 178, 187, 191, 202, 209, 221) - runtime 17min-1h26min (AVX@3.8Ghz) 20*698^236810-1 found by CharityEngine1 (TOP5000)