#include<iostream.h>

int prim (int n)
{ if(n==0 || n==1) return 1;
  for(int i=2;i<=n/2;i++)
    if(n%i==0) return 0;
 return 1;
}

void interval(int n, int &a, int &b)
{ a=n-1;
  while(!prim(a)) a--;
  b=n+1;
  while(!prim(b)) b++;
}

void main()
{
  int n,a,b;
  cin>>n;
  interval(n,a,b);
  cout<<a<<" "<<b;
}