# Integer Numbers Are all whole numbers, including 0. The mathematical symbol for the set of all integer numbers is $\mathbb{Z}$. See also [[Coprime Integers]]. For tricks that help with determining if a integer is a factor of another integer see [[Divisibility Rules]]. For an easy method of summing consecutive integers see [[The Gauss Trick]], and for summing consecutive even and odd integers see [[The Trick for Quickly Calculating the Sum of First N Odd Integers]] and [[The Trick for Quickly Calculating the Sum of First N Even Integers]].