#displays all prime numbers having 3 digits and starting with 5.

for i in range(500,600):
  if i % 2 == 0:
    continue
  else:
    for z in range(3,round(i/3)+1):
      prime = True
      if i % z == 0:
        prime = False
        break
      else:
        continue
    if prime == True:
        print(i)