- n=300-400k, 29k left (154, 460, 1494, 2196, 2806, 2874, 3384, 4618, 6334, 6748, 6886, 7156, 8994, 9078, 9504, 10828, 11476, 11542, 11646, 12120, 13242, 14058, 14944, 15216, 15282, 15592, 16518, 18106, 18154)
- runtime 8min11s-55min

14536*67^104372+1 found by rebirther
14536*67^110564+1 found by KySU
7972*67^110807+1 found by [AF>France>Sale-caractere] DEM
10758*67^115057+1 found by IDEA
15112*67^142915+1 found by Dingo
15930*67^152250+1 found by Balvenie
5668*67^170478+1 found by Detlef Erdmann
12802*67^170944+1 found by Balvenie
2872*67^174623+1 found by joe carnivore
6516*67^181499+1 found by taurec
8142*67^187107+1 found by Daniele [Lombardia]
17800*67^197288+1 found by Schildkroete
13294*67^215689+1 found by taurec
12802*67^240938+1 found by Daniel
13176*67^272816+1 found by mikey
4996*67^343869+1 found by ale4316 (TOP5000)
10072*67^363671+1 found by Dirk Broer (TOP5000)
10072*67^367000+1 found by herby44 (TOP5000)
16132*67^389127+1 found by mikey (TOP5000)