#include <bits/stdc++.h>
using namespace std;
template<typename T1,typename T2> inline void chmin(T1 &a,T2 b){if(a>b) a=b;}
template<typename T1,typename T2> inline void chmax(T1 &a,T2 b){if(a<b) a=b;}
using Int = long long;
const char newl = '\n';

//INSERT ABOVE HERE
const Int MAX = 1e7;
Int dp[MAX]={};
signed main(){
  cin.tie(0);
  ios::sync_with_stdio(0);

  for(Int i=2;i<MAX;i++)
    for(Int j=i+i;j<MAX;j+=i) dp[j]++;

  dp[0]=dp[1]=1;

  Int T;
  cin>>T;
  while(T--){
    Int A,P;
    cin>>A>>P;
    if(dp[P]) cout<<-1<<newl;
    else cout<<(A%P==0?0:1)<<newl;
  }
  return 0;
}