- n=25-100k, 44k left (374, 480, 596, 736, 792, 1074, 1102, 1720, 2574, 2956, 3428, 3518, 3896, 4006, 4098, 4232, 4586, 4682, 4872, 5228, 5238, 5282, 5458, 5612, 5892, 6058, 6060, 6178, 6226, 6478, 7276, 8168, 8278, 8554, 9162, 9284, 9286, 9364, 9380, 9386, 9488, 9594, 9798, 9834)
- runtime 38s-12min (AVX@3.8Ghz)

3988*663^25768+1 found by Ralfy
7296*663^27048+1 found by Johnny Rotten
8550*663^27914+1 found by Mankka*
5006*663^28999+1 found by Mankka*
1974*663^30757+1 found by Bryan
8684*663^30797+1 found by Bryan
2980*663^31041+1 found by Bryan
5598*663^33202+1 found by Bryan
7786*663^35184+1 found by vaughan
5682*663^38400+1 found by EarlyBird@Zircons
9378*663^40795+1 found by tito
8538*663^42687+1 found by Ralfy
4208*663^42943+1 found by Johnny Rotten
3308*663^49947+1 found by vaughan
5254*663^54534+1 found by Ralfy
3504*663^55883+1 found by Mankka*
8370*663^55931+1 found by Bryan
9308*663^59919+1 found by Ralfy
2268*663^60210+1 found by FalconCZ
3196*663^64185+1 found by Ralfy
7494*663^66258+1 found by Gattorantolo [Ticino]
7144*663^70989+1 found by Ralfy
2320*663^77203+1 found by Johnny Rotten
6112*663^77784+1 found by Ralfy
4542*663^88084+1 found by Ralfy
7552*663^96289+1 found by mikey
2738*663^96607+1 found by pschoefer
7466*663^98501+1 found by Ralfy
2724*663^99737+1 found by tito