- n=100-300k, 18k left (68, 729, 768, 1021, 1104, 1804, 1931, 2068, 2114, 2271, 2718, 3106, 3219, 3506, 3792, 3874, 4107, 5239)
- runtime 8min36s-1h29min (AVX@3.8Ghz)

2572*408^26252+1 found by nenym
1826*408^28799+1 found by Johnny Rotten
1178*408^31812+1 found by Ralfy
619*408^32117+1 found by shiva
4594*408^32867+1 found by [AF>France>Ouest>Normandie]The Stress Man (-:
1881*408^33039+1 found by Johnny Rotten
3034*408^40611+1 found by Woodles
2118*408^40638+1 found by Johnny Rotten
187*408^47814+1 found by Johnny Rotten
3436*408^49861+1 found by Ralfy
2014*408^50989+1 found by AQUA-MAN
2027*408^59670+1 found by Ralfy
2302*408^64960+1 found by LCB001
1184*408^65975+1 found by Ralfy
2306*408^67124+1 found by nenym
486*408^69543+1 found by LCB001
3897*408^71241+1 found by Ralfy
3986*408^75032+1 found by Ralfy
5024*408^77122+1 found by Ralfy
4562*408^90529+1 found by Johnny Rotten
2134*408^127675+1 found by zlodeck
3086*408^160483+1 found by CharityEngine1
3580*408^222030+1 found by KySU (TOP5000)