Hall of Reason... Prime numbers

I am having trouble with the prime number switches in the Hall of Reason. I have flipped down nos. 1,2,3,5,7,11 and the gate still will not open.
Any ideas?


  • 2,3,5,7,11

    A prime number is a number greater than 1. One should not be pressed on.

  • Dear Cat.
    Thank you for your help. Schoolboy error on my part.

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