9.13.2005

We Can Ignore One

What's the smallest number with prime factors 2, 3, 4?
12 (yeah, yeah, 4 guarantees 2 but I'm trying to make a point here)

Number of hours on a traditional western clock face?
12

What's the smallest number with prime factors 2, 3, 4, 5, 6?
60 (you get 6 as a bonus prime factor since you already have 2 and 3)

Number of minutes in an hour? Number of seconds in a minute?
60

What's the smallest number with prime factors 2, 3, 4, 5, 6, 8, 9, 10?
360 (ok, you only need 5, 8 and 9 but still...)

Number of degrees in a circle?
360

I've always thought that was kinda cool.