#include<cstdio>

long long power(long long a,long long b,long long mod){
    long long res = 1;
    while(b!=0){
        if(b%2) res = res*a%mod;
        a = a*a%mod;
        b /= 2;
    }
    return res;
}

void exgcd(long long a,long long b,long long& x,long long& y){
    if(b==0){
        x = 1;
        y = 0;
    }
    else{
        exgcd(b,a%b,x,y);
        long long t = x;
        x = y;
        y = t-(a/b)*x;
    }
}

int main(){
    int T;
    scanf("%d",&T);
    while(T--){
    long long x,k;
    scanf("%lld%lld",&x,&k);
    long long mod = 1e9+7;
    long long mMod = mod-1;
    long long a,b;
    exgcd(k,mMod,a,b);
    a = a%mMod;
    if(a<0) a += mMod;
    //debug
    //printf("a = %lld\n",a);
    //printf("%lld\n",a*k%mMod);
    printf("%lld\n",power(x,a,mod));
}
    return 0;
}