first; you did not understand me -> 12! = 479001600 that is the total number os possibilities assuming you have a 12 word seed (and you know all of the words but not the order) second: if we assume that you have the capabilities (both technical and financial pov) a 12 word seed is a joke for 1000 qubits (or even more assuming perfect syncronization of superstates and the binary compilation and algorithms far beyond basic grover for error correction and so much more) - I know that most likely nobody will understand what I am talking about but anyway...it takes some days and you got the result. -> what is important to notice: nobody performs such attacks in practice yet, there are endless reasons why it's not a real option to the time of writing. but this will change in the next decades.