package main

import (
	"bufio"
	"io"
	"os"
)

type FastScanner struct {
	r *bufio.Reader
}

func NewFastScanner(rd io.Reader) *FastScanner {
	return &FastScanner{r: bufio.NewReaderSize(rd, 1<<20)}
}

func (fs *FastScanner) NextInt64() int64 {
	sign := int64(1)
	val := int64(0)
	c, err := fs.r.ReadByte()
	for (c < '0' || c > '9') && c != '-' {
		if err != nil {
			return 0
		}
		c, err = fs.r.ReadByte()
	}
	if c == '-' {
		sign = -1
		c, err = fs.r.ReadByte()
	}
	for c >= '0' && c <= '9' {
		val = val*10 + int64(c-'0')
		c, err = fs.r.ReadByte()
		if err != nil {
			break
		}
	}
	return val * sign
}

func gcd(a, b int64) int64 {
	for b != 0 {
		a, b = b, a%b
	}
	if a < 0 {
		return -a
	}
	return a
}

func lcm(a, b int64) int64 {
	return a / gcd(a, b) * b
}

func main() {
	fs := NewFastScanner(os.Stdin)
	out := bufio.NewWriterSize(os.Stdout, 1<<20)
	defer out.Flush()

	t := int(fs.NextInt64())
	for ; t > 0; t-- {
		n := int(fs.NextInt64())
		a := make([]int64, n)
		for i := 0; i < n; i++ {
			a[i] = fs.NextInt64()
		}
		ok := true
		for i := 1; i+1 < n; i++ {
			l1 := lcm(a[i-1], a[i])
			l2 := lcm(a[i], a[i+1])
			if gcd(l1, l2) != a[i] {
				ok = false
				break
			}
		}
		if ok {
			out.WriteString("YES\n")
		} else {
			out.WriteString("NO\n")
		}
	}
}