- n=400-500k, 6k left (339, 9397, 12475, 21283, 25314, 25827)
- runtime 4-6h (AVX@3.8Ghz)

30375*820^26512+1 found by vaughan
22135*820^29457+1 found by vaughan
4441*820^31023+1 found by Johnny Rotten
16656*820^31862+1 found by Cyberacid
10507*820^46471+1 found by vaughan
24636*820^58914+1 found by vaughan
16069*820^64070+1 found by vaughan
3204*820^64442+1 found by vaughan
20637*820^69366+1 found by [SG-FC] hl
4462*820^70305+1 found by ardo
24901*820^80512+1 found by ardo
21058*820^83174+1 found by [SG-FC] hl
13318*820^84759+1 found by Agus
14038*820^95797+1 found by [SG-FC] hl
25062*820^104130+1 found by grcpool.5
22696*820^121517+1 found by Frank [NT]
12355*820^120640+1 found by 3XyQWnaYY7oHngexisi4Po1kfgce
1453*820^134623+1 found by Arkhenia
2665*820^137620+1 found by JagDoc
26380*820^155417+1 found by Frank [NT]
27120*820^161603+1 found by Frank [NT]
5623*820^167073+1 found by chillout
6955*820^171969+1 found by Doug
7054*820^180550+1 found by Ralfy
17889*820^209134+1 found by Lars_Seidel
29113*820^219306+1 found by Neriyah (TOP5000)
5292*820^281664+1 found by Science United (TOP5000)
29113*820^289614+1 found by LCB001 (TOP5000)
17665*820^368211+1 found by Science United (TOP5000)
16723*820^431579+1 found by Kf4ypd (TOP5000)