def gcd(a,b):
return gcd(b,a%b) if b>0 else a
for t in range(int(input())):
L = list(map(int,input().split()))
ans = 1
for i in range(len(L)):
for j in range(i+1,len(L)):
k = gcd(L[i],L[j])
ans = max(ans,k)
print(ans)