local function getgcd(x, y)
  while 0 < x do
    x, y = y % x, x
  end
  return y
end
n, h = io.read("*n", "*n")
for i = 1, n do
  a = io.read("*n")
  v = getgcd(h, a)
  h = math.floor(h / v)
end
print(h == 1 and "YES" or "NO")