```n: 2174096211032823084932239036566496093206280423```
In the factory.txt file, there were prime numbers that might be in the database.I programmed a python code to get prime numbers from the database.
```pythonimport requestsfrom bs4 import BeautifulSoupn = open("factory.txt").read().split()[1]
html = requests.get("http://factordb.com/index.php?query="+n).texthtml = BeautifulSoup(html,"html.parser").find_all("font")small_num = html[1].stringbig_num = html[2].string
flag = "KCTF{" + small_num + "-" + big_num + "}"print(flag)```
FLAG : ```KCTF{39434538531451803895327-55131777675015246472249}```