#define _CRT_SECURE_NO_WARNINGS
#include "bits/stdc++.h"
using namespace std;
#define rep(i, n) for(int i=0; i<(n); ++i)
#define FOR(i, m, n) for(int i=(m); i<(n); ++i)
#define sz(x) ((int)(x).size())
#define all(x) (x).begin(),(x).end()
#define mp make_pair
#define pb push_back
#define Cout(x) cout << (x) << endl
#define Cout2(x, y) cout << (x) << " " << (y) << endl
#define dump(x) cout << #x << " = " << (x) << endl;
#define forauto(i, a) for(auto i : a)cout << i << " "; puts("");
typedef long long LL;
typedef vector<int> VI;
typedef vector<LL> VL;
typedef vector<string> VS;
typedef vector<bool> VB;
typedef vector<vector<int>> VVI;
typedef pair<int, int> PII;
const int inf = 1e9;
const double pi = acos(-1.0);

//素数判定
bool isPrime(int n) {
	if (n == 2)return true;
	if (n < 2 || n % 2 == 0)return false;

	for (int i = 3; i*i <= n; i += 2) {
		if (n%i == 0)return false;
	}
	return true;
}

int main() {
	int n;
	while (cin >> n) {
		for (int i = n - 1; true; i--) {
			if (isPrime(i)) { cout << i << " "; break; }
		}

		for (int i = n + 1; true; i++) {
			if (isPrime(i)) { cout << i << endl; break; }
		}
	}
}
