0
Anonymous
No, it is not.
Wiki User
180divided by4 = 45
20 divided by4 = 5
420 divided by4 = 105
4 by 4 by4 by4
18.5
3 divided by4 = 0.75
91 divided by4 = 22.75
No.
21.5
yes 91 is divisable by 7 and 13 so no it isnt a prime #
106