Primality testing (38284^11491-1)/38283 [N-1, Brillhart-Lehmer-Selfridge]
Running N-1 test using base 2
Running N-1 test using base 29
Calling Brillhart-Lehmer-Selfridge with factored part 27.15%
(38284^11491-1)/38283 is PRP! (353.6782s+0.0004s)