WinPFGW 3.6.0:
2^113108-749 is 3-PRP! (17.6571s+0.0001s)
2^264655-127 is 3-PRP! (81.7834s+0.0006s)
2^268516-249 is 3-PRP! (83.1860s+0.0023s)
2^314548-249 is 3-PRP! (119.3851s+0.0006s)
2^281208-303 is 3-PRP! (106.4544s+0.0022s)
2^353672-303 is 3-PRP! (159.9311s+0.0021s)
2^236296-407 is 3-PRP! (74.3421s+0.0023s)
2^238936-407 is 3-PRP! (74.8684s+0.0027s)
2^213314-455 is 3-PRP! (50.4159s+0.0022s)

To be completed...