14 ms·
I love when primality is useful. Like cicadas. But 9 is not prime.
I love when primality is useful. Like cicadas. But 9 is not prime.
deleted 4y ago
[deleted]
Whoops I meant to write 11, not 9. I haven't actually heard of an 11-bladed screw, though here's a picture of an 11-bladed pumpjet. https://youtu.be/ugSEIiTZ1Pg?t=386 https://youtu.be/ugSEIiTZ1Pg?t=386
In wartime it is, and also equals to pi squared.