what do you call the numbers that cannot be arranged into 2-row array?

I answered this question below for Kendal. The subject is Array, but it's a couple of posts into the one marked Math. Check my reply and see if it makes sense.

odd

odd

What do we call the numbers that cannot be arranged into 2-row arrays?

shishka bum

thanx sooooo much! iv been waiting for hours to get my homework done for that stupid question! thanx!