Trial factored to 200 billion
Prime95 v30.19 tested 3-PRP
PFGW result:
PFGW Version 4.1.3.64BIT.20240114.Win_Dev [GWNUM 30.19]
Primality testing 2^909901+378567 [N-1, Brillhart-Lehmer-Selfridge]
Running N-1 test using base 7
2^909901+378567 is PRP! (426.4275s+0.0011s)
Date Discovered: 2024.7.30 in Mainland China
To be completed...