- n=100-300k, 18k left (1948, 2200, 2572, 3726, 3792, 3808, 4098, 4866, 5052, 5610, 6168, 6508, 6888, 7026, 7156, 7242, 7692, 8956)
- runtime 6min47s-1h11min (AVX@3.9Ghz)

9318*397^28920+1 found by LCB001
996*397^34420+1 found by Trotador
1762*397^34491+1 found by Trotador
8296*397^34564+1 found by Johnny Rotten
4024*397^35337+1 found by Mumps [MM]
9636*397^36888+1 found by arkiss
6936*397^38644+1 found by Mumps [MM]
3078*397^42177+1 found by Mumps [MM]
9696*397^44736+1 found by ardo
9306*397^52185+1 found by E-30 [Black Sheep]
4818*397^56714+1 found by Johnny Rotten
2196*397^57783+1 found by ardo
8916*397^69232+1 found by Johnny Rotten
7596*397^77651+1 found by Mumps [MM]
4128*397^101050+1 found by Science United
8706*397^112752+1 found by Cluster Physik
4128*397^124716+1 found by Sightus@CAU
6234*397^137037+1 found by [AF>Kirass>MPF] Nafrayou
8104*397^155963+1 found by arkiss
5296*397^178845+1 found by Sightus@CAU
4128*397^186558+1 found by WezH
7194*397^189845+1 found by cineon_lut [BlackOps]
8104*397^201299+1 found by Sightus@CAU
2176*397^209325+1 found by Science United
5028*397^237264+1 found by Cruncher Pete
5016*397^263616+1 found by Vato
8104*397^289699+1 found by FritzB
4720*397^298053+1 found by Sightus@CAU (TOP5000)