WinPFGW 3.6.5:
2^50917-2271 is 3-PRP! (4.6607s+0.0006s)
2^53917-2271 is 3-PRP! (5.4155s+0.0008s)
2^37920-2273 is 3-PRP! (2.6855s+0.0007s)
2^43346-2273 is 3-PRP! (2.9530s+0.0007s)
2^56690-2273 is 3-PRP! (5.2651s+0.0008s)
2^67724-2273 is 3-PRP! (6.6879s+0.0007s)
2^89942-2273 is 3-PRP! (13.4909s+0.0007s)
2^90154-2273 is 3-PRP! (12.2325s+0.0007s)
2^55983-2275 is 3-PRP! (4.5862s+0.0007s)
2^68498-2277 is 3-PRP! (6.2685s+0.0007s)
2^49023-2281 is 3-PRP! (3.9329s+0.0001s)
2^68035-2281 is 3-PRP! (7.6766s+0.0007s)
2^88501-2281 is 3-PRP! (15.6017s+0.0007s)
2^91919-2281 is 3-PRP! (12.3440s+0.0008s)
2^51697-2283 is 3-PRP! (6.2312s+0.1256s)
2^66868-2283 is 3-PRP! (6.8591s+0.0008s)
2^37268-2285 is 3-PRP! (2.0679s+0.0007s)
2^77408-2285 is 3-PRP! (11.2651s+0.0007s)
2^84464-2285 is 3-PRP! (10.5162s+0.0009s)

To be completed...