50009_245 completed - 211 hours for 10.6M matrix (TD=130).
Code:
prp76 factor: 1052119186109708804844031461687624318928404007766083841222321260920788288137
prp171 factor: 475231329873175546078459446670593652247788596455202540555534109860005830967017573078680079055473240011731573421475956849065946661508957673186277491520335858953524404662657
https://pastebin.com/XvT8nTnQ