I’m sometimes interested in the properties of numbers, even though I’m not that great at math. One of the things I like is when numbers have really low prime factors. For instance, 150 is 5x5x3x2, which 151 is, well, just 151. So I think it’s fair to say that 150 is much more of a nice, round number than 151 is. Now, consider 162. Not what many people would call a nice, round number. And yet, if you factor it out, 162 equals 2x3x3x3x3.