Stage 7 hints
Stage 7 is a mathematical puzzle.
At first glance it looks tricky, but if you break it down it is not that difficult.
The key is to start with the statement about the prime numbers and the one about how long I waited. If you write down the prime numbers and the combinations you get by multiplying them you should be able to narrow down the choices very quickly.
If you get totally stuck, there is a solution you can download at the link below. The password is the man who wrote the song.
Still stuck? Try here.