Found with PFGW Version 3.8.0

(38^28933-1)^2-2 is 2-PRP! (156.9206s+0.0053s)
(38^28933-1)^2-2 is 3-PRP! (157.0249s+0.0057s)
(38^28933-1)^2-2 is 5-PRP! (156.6622s+0.0059s)
(38^28933-1)^2-2 is 7-PRP! (156.8785s+0.0058s)
(38^28933-1)^2-2 is 11-PRP! (157.9131s+0.0059s)

To be completed...