P=4789309440, R=69204.8368251815
Closest is 61440
Limbic says: 61440
My other way says: 61440
          Rate  limbic  pruner  my_old
limbic 0.749/s      --   -100%   -100%
pruner   181/s  24119%      --    -97%
my_old  5545/s 740213%   2957%      --