N, H = gets.split.map(&:to_i)
A = gets.split.map(&:to_i)
h = H

A.each do |a|
  if a == 0
    puts 'NO'
    exit
  end

  g = h.gcd(a)
  h /= g

  if h == 1
    puts 'YES'
    exit
  end
end

puts 'NO'