In this month’s installment of Wrong, But Useful, Colin and Dave are joined by mathematical editor and proofreader @samhartburn. We apologise for the sound quality. We’ve done the best we can. Sam enjoys @robeastaway‘s Maths On The Go with her primary-school children. Dave plugs Colin’s books. It takes us some time to recover from the shock. Number of the podcast: $10^{6400} – 10^{6352} – 1$, a prime number consisting of 6,399 nines and an eight. Colin mentions the idea of Trinity Hall primes, although not by name. Sam asked for ideas about what makes a good textbook – Dave has […]