But there is also an infinite number of even numbers - every counting number can be multiplied by 2.

The name derives from the intuitive sense that such a collection is "no bigger" than the counting numbers.

Their counting number alone shows their age.

If 0 is not called a natural number, then the natural numbers are the same as the counting numbers.

So it's a bit like counting and we keep getting the same counting numbers that we're happy with.

The natural numbers have been nicknamed "the counting numbers" since they are what we usually use to count things with.

The ordinary counting numbers (cardinals) from 0 through 10 are given in the table below.

The counting numbers are exactly what can be defined formally as the finite cardinal numbers.

If we're doing add we're just starting off with the counting numbers.

A prime number is defined as a counting number that is divisible only by itself and 1.