#include <bits/stdc++.h>
using namespace std;

#define FOR(i,l,r) for(int i = (l);i < (r);i++)
#define ALL(x) (x).begin(),(x).end()
template<typename T> bool chmax(T& a,const T& b){return a < b ? (a = b,true) : false;}
template<typename T> bool chmin(T& a,const T& b){return b < a ? (a = b,true) : false;}
typedef long long ll;

int N;
string S;
bool b [10];

long long gcd(long long x,long long y)
{
	return y ? gcd(y,x % y) : x;
}

int main()
{
	cin.tie(0);
	ios::sync_with_stdio(false);

	cin >> S;
	N = S.size();
	if(count(ALL(S),S.front()) == N){
		cout << S << endl;
		return 0;
	}
	FOR(i,0,N){
		b [S [i] - '0'] = true;
	}

	ll g = -1;
	FOR(i,0,10) if(b [i]){
		FOR(j,i + 1,10) if(b [j]){
			if(g == -1){
				g = abs((i * 10 + j) - (j * 10 + i));
			}
			else{
				g = gcd(g,abs((i * 10 + j) - (j * 10 + i)));
			}
		}
	}

	ll rm = 0;
	FOR(i,0,N){
		(rm *= 10) %= g;
		(rm += S [i] - '0') %= g;
	}

	cout << gcd(rm,g) << endl;

	return 0;
}