PFGW 3.4.0:
2^161258+63439 is 3-PRP! (36.9322s+0.0018s)
2^76902+63439 is 3-PRP! (8.2625s+0.0017s)
2^53518+41719 is 3-PRP! (4.1201s+0.0017s)
2^33907+53711 is 3-PRP! (1.7069s+0.0018s)
2^33492+15601 is 3-PRP! (1.6841s+0.0017s)

To be completed...