User blog comment:I am a McCree God/Facto-Graham/@comment-30754445-20171227180214

As strange as it may seem to you, this number is virtually indistinguishable from Graham's Number. In fact, it has less of an effect on Graham's Number than adding 1 has on a googolplex.

Actually:

Graham's Number = 3^^^^^[g63 arrows]^^^^^^3

"Facto-Graham" < 3^^^^^[ g63 + 1 arrows]^^^^^3

So this extension is weaker than adding one to g63.