t = int(input())
b = []
for i in range(t):
    n = int(input())
    a = input()
    a = [int(j) for j in a.split()]
    b.append(a)
    
for i in range(t):
    m = max(b[i])
    for j in b[i]:
        if m%j != 0:
            break
    else:
        print("Yes")
        continue
    print("No")