- n=50-100k, 69k left (410, 628, 680, 1681, 1898, 2116, 2129, 2304, 2566, 2885, 3033, 3896, 4064, 5253, 5356, 5628, 6162, 6410, 6899, 6938, 7017, 7123, 7669, 7722, 7744, 8122, 8285, 8632, 8766, 9077, 9125, 10299, 10687, 11110, 11391, 11601, 11665, 11887, 11925, 11943, 11944, 12422, 12429, 13393, 13658, 14242, 14392, 14858, 14884, 15171, 15446, 15976, 16136, 16384, 16613, 16945, 17424, 17700, 17887, 17897, 17994, 18421, 18880, 19098, 19916, 20112, 20602, 20701, 21072)
- runtime 87s-7min (AVX@3.8Ghz)

16328*270^53068-1 found by Ralfy
10513*270^53267-1 found by vaughan
10894*270^53498-1 found by Ralfy
13035*270^54632-1 found by Mankka*
3992*270^54902-1 found by [SG] Archi_74
19769*270^56509-1 found by vaughan
5266*270^59396-1 found by Ralfy
15102*270^61161-1 found by LCB001
13820*270^61616-1 found by Ralfy
9811*270^63066-1 found by Ralfy
2045*270^63131-1 found by tito
3599*270^64759-1 found by vaughan
21212*270^65247-1 found by Ralfy
6969*270^65737-1 found by LCB001
3200*270^67129-1 found by Johnny Rotten
6325*270^67570-1 found by vaughan
4254*270^68117-1 found by Gattorantolo [Ticino]
15591*270^69413-1 found by Ralfy
6983*270^72405-1 found by Ralfy
7255*270^73126-1 found by n3Ro
18344*270^74431-1 found by Ralfy
11929*270^75257-1 found by Ralfy
5006*270^75637-1 found by Ralfy
8542*270^78741-1 found by vaughan
9825*270^80094-1 found by Ralfy
4195*270^80151-1 found by Johnny Rotten
10817*270^81410-1 found by europe64
2588*270^81676-1 found by Ralfy
5359*270^84972-1 found by Ralfy
15213*270^85053-1 found by Ralfy
11580*270^87864-1 found by vaughan
4*270^89661-1 found by Ralfy
9296*270^93802-1 found by Ralfy
4573*270^99828-1 found by Ralfy