Primes on the Moon (Lunar Arithmetic) - Numberphile

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Lunar arithmetic (formerly dismal arithmetic) - by changing the rules of arithmetic, what happens?

What is a prime number in this new landscape? What pattern do the squares follow? And what light might that shed on more conventional mathematics?

This might be an interesting lesson to develop with a gifted and talented class.

27 November 2018 Edit: 27 November 2018

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