# What is Integer Number

**Integer numbers** are whole numbers plus negative numbers.

So, -4, -10, 0, 2, 23 are all integer numbers.

Thus, integers can be

- positive (they are bigger than 0) {1,2,3,4,5,...}
- zero {0}
- negative (the are less than 0) {..., -5,-4,-3,-2,-1}

Together we can write integers as {..., -5,-4,-3,-2,-1,0,1,2,3,4,5,...}.

Ellipsis means that numbers continue and continue (we just can't write all whole numbers and all negative numbers).