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

#define NDEBUG
#include <cassert>


typedef long long ll;
typedef long double Double;
typedef unsigned long long ull;
typedef pair<int,int> ii;
typedef pair<ll,ll> llll;
typedef pair<double,double> dd;

typedef vector<int> vi;
typedef vector<vector<int>> vvi;
typedef vector<ii> vii;
typedef vector<vector<ii>> vvii;
typedef vector<ll> vll;
typedef vector<vector<ll>> vvll;
typedef vector<llll> vllll;
typedef vector<bool> vb;
typedef vector<string> vs;
typedef vector<double> vd;
typedef vector<long double> vD;

#define sz(a)  int((a).size())
#define pb  push_back
#define eb  emplace_back
#define FOR(var,from,to) for(int var=(from);var<=(to);++var)
#define rep(var,n)  for(int var=0;var<(n);++var)
#define rep1(var,n)  for(int var=1;var<=(n);++var)
#define repC2(vari,varj,n)  for(int vari=0;vari<(n)-1;++vari)for(int varj=vari+1;varj<(n);++varj)
#define repC3(vari,varj,vark,n)  for(int vari=0;vari<(n)-2;++vari)for(int varj=vari+1;varj<(n)-1;++varj)for(int vark=varj+1;vark<(n);++vark)
#define ALL(c)  (c).begin(),(c).end()
#define RALL(c)  (c).rbegin(),(c).rend()
#define tr(i,c)  for(auto i=(c).begin(); i!=(c).end(); ++i)
#define found(s,e)  ((s).find(e)!=(s).end())
#define mset(arr,val)  memset(arr,val,sizeof(arr))
#define mid(x,y) ((x)+((y)-(x))/2)
#define IN(x,a,b) ((a)<=(x)&&(x)<=(b))
#define cons make_pair
#define clamp(v,lo,hi) min(max(v,lo),hi)
#define ABS(x) max((x),-(x))

template<typename T1, typename T2> inline void amin(T1 & a, T2 const & b) { if (a>b) a=b; }
template<typename T1, typename T2> inline void amax(T1 & a, T2 const & b) { if (a<b) a=b; }
template<typename X, typename T> auto vectors(X x, T a) { return vector<T>(x, a); }
template<typename X, typename Y, typename Z, typename... Zs> auto vectors(X x, Y y, Z z, Zs... zs) { auto cont = vectors(y, z, zs...); return vector<decltype(cont)>(x, cont); }

inline ll square(ll x) { return x * x; }
inline ll gcd(ll a, ll b) { while(a) swap(a, b%=a); return b; }
inline ll lcm(ll a, ll b) { return a/gcd(a,b)*b; }
template <typename T>
inline T mod(T a, T b) { return ((a % b) + b) % b; }

template <typename T>
int find_left(vector<T>& v, T elem) {
    return (int)(upper_bound(v.begin(), v.end(), elem) - v.begin()) - 1;
}
template <typename T>
int find_right(vector<T>& v, T elem) {
    return (int)(lower_bound(v.begin(), v.end(), elem) - v.begin());
}

const ll MOD=1000000007LL;

inline ll ADD(ll x, ll y) { return (x+y) % MOD; }
inline ll SUB(ll x, ll y) { return (x-y+MOD) % MOD; }
inline ll MUL(ll x, ll y) { return x*y % MOD; }
inline ll POW(ll x, ll e) { ll v=1; for(; e; x=MUL(x,x), e>>=1) if (e&1) v = MUL(v,x); return v; }
inline ll INV(ll y) { /*assert(y%MOD!=0);*/ return POW(y, MOD-2); }
inline ll DIV(ll x, ll y) { return MUL(x, INV(y)); }


vector<int> primes;
vector<int> smallest_prime_factor;

int sieve(int nmax){
    primes.clear();
    smallest_prime_factor.assign(nmax+1, 0);

    for (int n=2; n<=nmax; ++n) {
        if (!smallest_prime_factor[n]) {
            primes.push_back(n);
            for (int kn=n; kn<=nmax; kn+=n) {
                if (!smallest_prime_factor[kn]) {
                    smallest_prime_factor[kn] = n;
                }
            }
        }
    }
    return primes.size();
}

vector<int> factorize(int x) {
    vector<int> prime_factors;
    while (x > 1) {
        int s = smallest_prime_factor[x];
        if (!s) break;
        if (prime_factors.empty() || prime_factors.back() != s)
            prime_factors.push_back(s);
        else
            return vi{};
        x /= s;
    }
    return prime_factors;
}


int N,K;
vll dp;
vii pm;
vll pn;

ll f(ll cl){
    if (dp[cl]) return dp[cl];

    ll base = pn[cl];
    for (ii& u: pm){
        int p = u.first, cnt = u.second;
        if (cl < p) break;
        if (cnt % 2) {
            base = SUB(base, pn[cl/p]);
        } else {
            base = ADD(base, pn[cl/p]);
        }
    }
    return dp[cl] = base;
}

ll solve() {
    dp.assign(K+1, 0);
    dp[1] = 1;

    pn.assign(K+1, 1);
    for(int n=1; n<=K; ++n) pn[n] = POW(n, N);


    for(int n=1; n<=K; ++n){
        vi fs = factorize(n);
        if (fs.empty()) continue;
        pm.emplace_back(n, fs.size());
    }

    ll ans = 0;
    for(int d=1; d<=K; ++d){
        ans += MUL(d, f(K/d));
        ans %= MOD;
    }
    return ans;
}

int main() {
    cin >> N >> K;
    sieve(K+1);
    cout << solve() << endl;
    return 0;
}


Measured memory_bytes: 5988