- n=450-1M, 5k left (381714, 4502952, 5237186, 7256276, 8524154)
- runtime 36min-1h28min (AVX @3.8Ghz)

6085180*15^51025-1 found by Ralfy
6919366*15^56662-1 found by EarlyBird@Zircons
6159044*15^63666-1 found by vaughan
5945736*15^65490-1 found by vaughan
8370008*15^66535-1 found by vaughan
8029728*15^71094-1 found by MAGPIE
8747006*15^71297-1 found by vaughan
9952658*15^77101-1 found by Joe
8088512*15^81480-1 found by rebirther
7773836*15^88277-1 found by MAGPIE
6310892*15^118730-1 found by Odicin
298342*15^119193-1 found by vanos0512
9334766*15^119953-1 found by rebirther
4820256*15^120564-1 found by kinski
1877488*15^121340-1 found by KaptainBlaZzed
135202*15^133433-1 found by WTBroughton
6376538*15^136678-1 found by rebirther
7447624*15^145892-1 found by KaptainBlaZzed
940130*15^147006-1 found by killik
300870*15^156608-1 found by KaptainBlaZzed
8168814*15^158596-1 found by KaptainBlaZzed
9997886*15^180302-1 found by Cruncher Pete
937474*15^195209-1 found by Cruncher Pete
5149158*15^249605-1 found by Excelsior
5255502*15^257491-1 found by Excelsior
3889018*15^275603-1 found by Joe
3347624*15^347109-1 found by 47an (TOP5000)
9535278*15^375675-1 found by Woodles (TOP5000)
9105446*15^496499-1 found by Vato (TOP5000)
9756404*15^527590-1 found by IDEA (TOP5000)
4242104*15^728840-1 found by KySU (TOP5000)