natural_primer.rb

natural_primer = ->(number) {
   primes = [1]
   number.times do
        next_prime = primes.reduce(:*) + 1
        primes << next_prime
   end
   puts primes[1..-1].join(', ')
}


unless ARGV[0].nil?
        natural_primer.(ARGV[0].to_i)
end