import sys
sys.setrecursionlimit(10**6)
input = sys.stdin.readline

furui = [1]*(5*10**6+1)
furui[0] = furui[1] = 0
for i in range(5*10**6+1):
    if furui[i]:
        x = 2*i
        while x <= 5*10**6:
            furui[x] = 0
            x += i

t = int(input())
ans = [-1]*t
for i in range(t):
    a,p = map(int,input().split())
    if furui[p]:
        ans[i] = 1
        if a%p == 0:
            ans[i] = 0
print("\n".join(str(i) for i in ans))