bug#33765: emacs-26.1-mac-7.4; (expt 2 140) ; produces 0 in scratch buffer, unexpectedly

[Van L]

> Why do you say this is unexpected?

I am not a mathematician but I believe the answer is wrong for 2^140.

> If you want the same support for huge numbers as in Scheme, try Emacs 27.

I take that to mean the master branch but the emacs-mac repo-updates are less 
freq. than gnu-emacs’s.

Thanks.