new_contents: # Most common used methods
  
  def ESieve(n):
      """ Get list of prime numbers """
      multiples = []
      prime = []
      for i in range(2, n+1):
          if i not in multiples:
              prime.append(i)
              for j in range(i*i, n+1, i):
                  multiples.append(j)
      return prime
  
  def isPrime(num):
      """ Check is number primarity """
  	i = 2
  	stop = int(num/2)+1
  	while i < stop:
  		if num % i == 0:
  			return False
  		i += 1
  	return True
  
subject: Add helper for common used functions