Hello!

I've got a little problem with the following assignment. I would be very grateful if anyone could at least give me some hint on how to do it.

There are given different odd prime numbers http://www.mymathforum.com/cgi-bin/mimetex.cgi?p and http://www.mymathforum.com/cgi-bin/mimetex.cgi?q. Prove that number http://www.mymathforum.com/cgi-bin/m...Bpq%7D%20-%201 has at least 3 different prime factors.

Thank you very much!