I did factorials even under KLISP 23 with cons cells as fake integers: https://t3x.org/klisp/22/index.html https://t3x.org/klisp/22/index.html Dog slow but th

I did factorials even under KLISP 23 with cons cells as fake integers: https://t3x.org/klisp/22/index.html https://t3x.org/klisp/22/index.html Dog slow but the old n270 netbook (32 bit) handles big factorials >20 fine, and OFC it's instant under Common Lisp (SBCL) and Scheme (both S9 and Chicken).