15: Complex, triangular, pernicious, and much more | Moment's Notice


Last updated 9/14/2022 at 12:28pm

Fifteen, 15. It’s a complex number. It’s a composite number (formed through multiplication), a deficient number (like all prime numbers, but it’s not prime), a pernicious number (oh, forget it), and a bell number (won’t even try).

It’s a...

For access to this article please sign in or subscribe.


Reader Comments(0)


Powered by ROAR Online Publication Software from Lions Light Corporation
© Copyright 2023

Rendered 09/10/2023 17:35