WinPFGW 3.4.0:
2^391933+5897 is 3-PRP! (251.2246s+0.0001s)
2^55034+14929 is 3-PRP! (4.7667s+0.0016s)
2^49167+54983 is 3-PRP! (3.7887s+0.0018s)
2^44043+54983 is 3-PRP! (3.4153s+0.0016s)

To be completed...