Are cyclic groups isomorphic?

`Z mod mnZ = Z mod mZ x Z mod nZ ?`

Enter a value for all fields

This is a quick calculator to see whether the cross product of two cyclic groups is also cyclic. Say you have Z/mZ and Z/nZ (where Z represents the integers. For example, Z/9Z is the group of integers mod 9). Enter the values for m and n to see if Z/mZ x Z/nZ is isomorphic to Z/mnZ (therefore cyclic)