#define _USE_MATH_DEFINES
#include<iostream>
#include<vector>
#include<algorithm>
#include<cmath>
#include<string>
#include<iomanip>
#include<numeric>
#include<queue>
#include<deque>
#include<stack>
#include<set>
#include<map>
#include<random>
#include<bitset>
#include<cassert>
#include<complex>
#include<fstream>
#include<cstdlib>
#include<functional>
#include<array>
using namespace std;
typedef long long ll;
const int mod=1e9+7;
const int dx[]={1,0,0,-1},dy[]={0,1,-1,0};
int main(){
	int a,b,n;
	cin>>a>>b>>n;
	int ans=1;
	for(int S=0;S<pow(b-a+1,n);S++){
		int S2=S,g=0;
		for(int i=0;i<n;i++){
			g=gcd(g,a+S2%(b-a+1));
			S2/=b-a+1;
		}
		ans=(ll)ans*g%mod;
	}
	cout<<ans<<endl;
}