Please put an NSFW tag on this. I was on the train and when I saw this I had to start furiously masturbating. Everyone else gave me strange looks and were saying things like “what the fuck” and “call the police”. I dropped my phone and everyone around me saw these numbers. Now there is a whole train of men masturbating together at this one equation. This is all your fault, you could have prevented this if you had just tagged this post NSFW.
Fun fact, in Spanish "prime numbers" is "números primos". Primos can also mean cousins. So yeha, today I found that there are sexy cousin numbers. And apparently there are also the cousin cousin numbers.