#include<iostream>
using namespace std;
int main(){
  int n;
  while(cin >> n){
    int math[100000]={0};
    math[1]=1;
    for(int i=2;i<100000;i++){
      int bell=i;
      while(bell+i<=100000){
	bell+=i;
	if(math[bell]==0){
	  math[bell]=1;
	}
      }
    }
    
    int hess=n;
    while(1){
      hess--;
      if(math[hess]==0){
	cout << hess << " ";
	break;
      }
    }
    
    hess=n;
    while(1){
      hess++;
      if(math[hess]==0){
	cout << hess << endl;
	break;
      }
    }
  }
    
  return (0);
}