I wondered this lunchtime while aboard the Number 3 bus how far you could travel in London by travelling solely on prime numbered buses. Here are the (my) rules:
- The number of every bus boarded must be prime
- You cannot board the same numbered bus twice
- Having alighted one bus, you must catch the next bus from exactly the same bus stop
- No night buses.
Here's your list of buses. And here are your London bus map.
