Trial factored to 100 billion
Prime95 v30.8 tested 3-PRP

PFGW result:
PFGW Version 4.1.3.64BIT.20240114.Win_Dev [GWNUM 30.19]

Primality testing 2^771227+61121 [N-1, Brillhart-Lehmer-Selfridge]
Running N-1 test using base 13
Running N-1 test using base 17
Running N-1 test using base 19
Running N-1 test using base 23
2^771227+61121 is PRP! (2482.2725s+0.0005s)

Date Discovered: 2024.5.24

To be completed...