- n=50-100k, 68k left (220, 502, 1532, 1790, 2296, 2378, 2770, 2848, 3918, 5116, 5182, 5766, 6690, 7080, 7390, 7868, 8410, 8412, 8872, 9932, 11318, 11660, 12550, 12858, 13298, 14380, 15308, 15518, 16112, 16728, 17302, 17582, 18322, 19098, 19202, 19638, 20220, 20236, 20366, 21852, 21962, 22118, 23376, 23728, 23838, 24162, 24358, 24608, 25052, 25126, 26060, 26470, 26498, 26736, 27376, 27522, 27600, 27876, 27958, 28062, 28222, 28230, 28440, 28556, 29538, 31246, 31932, 32380)
- runtime 1m39s-7min (AVX@3.8Ghz)

1732*291^50922+1 found by Mankka*
4086*291^56312+1 found by vinn [Czech National Team]
29566*291^57362+1 found by vaughan
10100*291^59413+1 found by vaughan
14236*291^62400+1 found by rebirther
21292*291^62600+1 found by rebirther
838*291^62924+1 found by vinn [Czech National Team]
10506*291^66520+1 found by Michael Goetz
31902*291^67720+1 found by Thomas Turk
30392*291^68232+1 found by Ralfy
22538*291^69242+1 found by Adrian Schori
11030*291^75869+1 found by Adrian Schori
16540*291^80519+1 found by vaughan
9400*291^81127+1 found by Dejan
10050*291^86640+1 found by Adrian Schori
16516*291^89071+1 found by Adrian Schori
16726*291^89370+1 found by Adrian Schori