WinPFGW 3.6.5:
2^50550-2253 is 3-PRP! (5.5732s+0.0007s)
2^79962-2253 is 3-PRP! (9.6562s+0.0007s)
2^91009-2253 is 3-PRP! (10.2197s+0.0007s)
2^96930-2253 is 3-PRP! (17.0488s+0.0007s)
2^79642-2255 is 3-PRP! (14.8057s+0.0007s)
2^38616-2259 is 3-PRP! (2.0004s+0.0023s)
2^38961-2259 is 3-PRP! (2.0141s+0.0019s)
2^45219-2259 is 3-PRP! (2.4506s+0.0019s)
2^48913-2259 is 3-PRP! (3.8955s+0.0020s)
2^87233-2259 is 3-PRP! (9.7935s+0.0019s)
2^47518-2261 is 3-PRP! (2.5730s+0.0019s)
2^60866-2261 is 3-PRP! (5.4485s+0.0019s)
2^47838-2265 is 3-PRP! (2.5899s+0.0019s)
2^50304-2265 is 3-PRP! (4.0311s+0.0020s)
2^64440-2265 is 3-PRP! (5.8027s+0.0019s)
2^73230-2265 is 3-PRP! (8.2607s+0.0019s)
2^84158-2267 is 3-PRP! (9.5060s+0.0019s)
2^45649-2269 is 3-PRP! (2.6346s+0.0006s)

To be completed...