#define _USE_MATH_DEFINES
#include <bits/stdc++.h>
using namespace std;
#define FOR(i,m,n) for(int i=(m);i<(n);++i)
#define REP(i,n) FOR(i,0,n)
#define ALL(v) (v).begin(),(v).end()
using ll = long long;
constexpr int INF = 0x3f3f3f3f;
constexpr long long LINF = 0x3f3f3f3f3f3f3f3fLL;
constexpr double EPS = 1e-8;
constexpr int MOD = 998244353;
// constexpr int MOD = 1000000007;
constexpr int DY4[]{1, 0, -1, 0}, DX4[]{0, -1, 0, 1};
constexpr int DY8[]{1, 1, 0, -1, -1, -1, 0, 1};
constexpr int DX8[]{0, -1, -1, -1, 0, 1, 1, 1};
template <typename T, typename U>
inline bool chmax(T& a, U b) { return a < b ? (a = b, true) : false; }
template <typename T, typename U>
inline bool chmin(T& a, U b) { return a > b ? (a = b, true) : false; }
struct IOSetup {
  IOSetup() {
    std::cin.tie(nullptr);
    std::ios_base::sync_with_stdio(false);
    std::cout << fixed << setprecision(20);
  }
} iosetup;

std::vector<int> prime_sieve(const int n, const bool get_only_prime) {
  std::vector<int> smallest_prime_factor(n + 1), prime;
  std::iota(smallest_prime_factor.begin(), smallest_prime_factor.end(), 0);
  for (int i = 2; i <= n; ++i) {
    if (smallest_prime_factor[i] == i) prime.emplace_back(i);
    for (const int p : prime) {
      if (i * p > n || p > smallest_prime_factor[i]) break;
      smallest_prime_factor[i * p] = p;
    }
  }
  return get_only_prime ? prime : smallest_prime_factor;
}

int main() {
  const vector<int> primes = prime_sieve(1000000, true);
  int t; cin >> t;
  set<ll> s;
  const auto ins = [&](const ll n) -> void {
    const auto [it, inserted] = s.emplace(n);
    if (!inserted) s.erase(it);
  };
  while (t--) {
    int n; cin >> n;
    s.clear();
    while (n--) {
      ll a; cin >> a;
      for (const int p : primes) {
        while (a % (1LL * p * p) == 0) a /= 1LL * p * p;
        if (a % p == 0) {
          ins(p);
          a /= p;
        }
      }
      if (a == 1) continue;
      const int si = round(sqrt(a));
      if (1LL * si * si == a) continue;
      ins(a);
    }
    cout << (s.empty() ? "Yes\n" : "No\n");
  }
  return 0;
}