WinPFGW 3.8.3:
2^194505-4615 is 3-PRP! (17.1561s+0.0030s)
2^193812-4799 is 3-PRP! (17.0586s+0.0027s)
2^179718-4893 is 3-PRP! (14.8530s+0.0028s)
2^179345-4903 is 3-PRP! (14.8226s+0.0028s)
2^195478-4991 is 3-PRP! (17.2476s+0.0029s)

To be completed...