Our second anniversary, and it’s a bit of a love-in. Sorry to disappoint. Colin and his partner have a new baby, Fred! Happy anniversary to us! Number of the podcast: $2+\sqrt{3}$, because it comes up in the Lucas-Lehmer test for Mersenne primes. A brief digression on the test, Mersenne primes and his list. The anecdote Colin refers to is about Frank Nelson Cole. @johanges (Johan in real life) points us at a video on 3D printing as an education tool. Colin mentions Desmos. Dave wonders what other teaching tools could be printed. Colin goes over to the dark side, gives […]