Sexy Primes - Numberphile
Sexy primes are prime numbers which differ by six - but what is an "Octomus Prime"??? Featuring James Grime. More links & stuff in full description below ...
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JAMES GRIME: Yeah, we're doing sexy maths today, right? So we're talking about sexy primes. Well, I'm not really qualified to talk about sexiness. I've come dressed as a salsa teacher tonight. So hooray. But I am qualified to talk about prime numbers. Fortunately for me, though, in this case, sexy means another word for six. So it's sixy primes. That's what we're going to do. Let's be honest. The reason we're doing this video is because it has a funny name. But let's see what a sixy prime is. OK. So a sixy prime-- or two primes, actually, that differ by 6. So if I pick 5-- that's a prime number-- and 11, those are two prime numbers, and the difference is 6. So they called sexy primes. We can pick another example. Let's pick 7, an...
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JAMES GRIME: Yeah, we're doing sexy maths today, right? So we're talking about sexy primes. Well, I'm not really qualified to talk about sexiness. I've come dressed as a salsa teacher tonight. So hooray. But I am qualified to talk about prime numbers. Fortunately for me, though, in this case, sexy means another word for six. So it's sixy primes. That's what we're going to do. Let's be honest. The reason we're doing this video is because it has a funny name. But let's see what a sixy prime is. OK. So a sixy prime-- or two primes, actually, that differ by 6. So if I pick 5-- that's a prime number-- and 11, those are two prime numbers, and the difference is 6. So they called sexy primes. We can pick another example. Let's pick 7, an...
