Eshell V8.2.2  (abort with ^G)
1> A = fun() -> math:pow(2,64) end.
#Fun<erl_eval.20.52032458>
2> A().
1.8446744073709552e19
3> Spawn_A = fun() -> spawn(A) end.
#Fun<erl_eval.20.52032458>
5> Proc = [Spawn_A() || _ <- lists:seq(1,1000000)].
[<0.65.0>,<0.66.0>,<0.67.0>,<0.68.0>,<0.69.0>,<0.70.0>,
 <0.71.0>,<0.72.0>,<0.73.0>,<0.74.0>,<0.75.0>,<0.76.0>,
 <0.77.0>,<0.78.0>,<0.79.0>,<0.80.0>,<0.81.0>,<0.82.0>,
 <0.83.0>,<0.84.0>,<0.85.0>,<0.86.0>,<0.87.0>,<0.88.0>,
 <0.89.0>,<0.90.0>,<0.91.0>,<0.92.0>,<0.93.0>|...]