#include <stdio.h>
// #include <math.h>
#include <assert.h>
typedef long unsigned int lu;
int main(){
  {int minN = 1<<20; lu minNd = 1L<<63;
    for(int j=1<<10; j<(1<<11); ++j) {
      int N = (1<<20)/(j+1); minN = N<minN?N:minN;
      lu Nd = N*(j*(1L<<42)); minNd = Nd<minNd?Nd:minNd;
      assert(Nd < 1L<<62);}
    printf("minN = %x minNd = %016lx\n", minN, minNd);}
return 0;}

// minN = 200 minNd = 3fd9200000000000