- n=400-500k, 28k 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, 16518, 18106, 18154)
- runtime 1h07min-1h49min (AVX@3.8Ghz)

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)
15592*67^405715+1 found by Science United (TOP5000)