Message boards : Science : base S648 (6k)
- n=100-300k, 6k left (56,89,117,166,199,218) - runtime 10-1h15min 61*648^54359+1 found by LCB001 144*648^102694+1 found by GLeeM 144 * 648^186106 found by Lennart SM5YMT (TOP5000)