I made a new CUDA software available for the search for XGF factors at the link:
https://github.com/erwdoes/lfld_xGF
The source code is also available.
I already tested the program to search for factors with up to 416 bits. I've found more than 300 new factors with this software.
The performance with a RTX3070 is:
n=21-30 2.45 x 10^9 K/sec
n=101-110 865 x 10^6 K/sec
n=291-300 133 x 10^6 K/sec
Thanks
Erwin