code: def BestThreadsNumber(jobs):
      factors = PrimeFactors(jobs)
      matrix = numpy.append([factors], [factors[::-1]], axis=0)
      threads = 1
      for factor in matrix.transpose().ravel():
          threads = threads * factor
          if threads * threads > jobs or threads > 512:
              break
      return int(threads)
  
imports: import numpy
  import sys
  import getopt
  import time
  import itertools
  from socket import gethostname
label_desc: Use image node_id 3 for calling a global function with example usage: BestThreadsNumber(jobs) and returns: int