Quote:
Originally Posted by MyDogBuster
Mini Drive 1b 38K40K
68232896 38780 68232896*3^38780+1 is 3PRP! (21.8944s+0.0009s)
72086978 38982 72086978*3^38982+1 is 3PRP! (23.6047s+0.0011s)
76479688 39859 76479688*3^39859+1 is 3PRP! (20.0494s+0.0011s)
98486582 39962 98486582*3^39962+1 is 3PRP! (24.3015s+0.0009s)
4 primes found with phrot 0.51 proven with PFGW
Results emailed

Hmm...did you forget to run PFGW with the t option when proving your primes? Because your results only say that your primes are 3PRP, not proven prime. (3PRP is, actually, the same thing thing that LLR does on these kinds of numbers.)
I reran PFGW on these with the t command line switch so that it actually proves them prime instead of just doing a PRP test as is the default:
68232896*3^38780+1 is prime! (26.7541s+0.0091s)
72086978*3^38982+1 is prime! (27.0359s+0.0039s)
76479688*3^39859+1 is prime! (27.9304s+0.0026s)
98486582*3^39962+1 is prime! (27.5949s+0.0029s)
(Note: If you're using PFGW to prove Riesel primes, such as those in the Riesel base 3 minidrive, you'll need to use the tp command line switch in place of t.)