Message boards : Science : base S446 (6k)
- n=100-300k, 6k left (52, 53, 98, 115, 120, 136) - runtime 6min37s-1h09min (AVX@3.8Ghz) 67*446^121154+1 found by grcpool.com 67*446^288982+1 found by ardo (TOP5000)