WinPFGW 3.4.0:
2^391324+90901 is 3-PRP! (249.4012s+0.0042s)
2^69719+87233 is 3-PRP! (7.4586s+0.0029s)
2^61736+90061 is 3-PRP! (5.3398s+0.0017s)
2^40165+81101 is 3-PRP! (2.0959s+0.0017s)
2^36999+94733 is 3-PRP! (1.8625s+0.0017s)
2^34382+84529 is 3-PRP! (1.7270s+0.0016s)
2^33707+89003 is 3-PRP! (1.6963s+0.0017s)
2^33360+79291 is 3-PRP! (1.6789s+0.0016s)
2^33245+86147 is 3-PRP! (1.6811s+0.0018s)

To be completed...