Square numbers have odd numbers of factors.
Prime numbers like 2, 3, 5 and 7.
Co-prime numbers, relatively prime numbers and any set of prime numbers.
When the numbers are relatively prime.
prime numbers
31
Natural numbers Integers Rational numbers Real numbers Complex numbers
irrational numbers odd numbers even numbers whole numbers prime numbers composite numbers counting numbers
what types of e numbers are there?
The set of real numbers can be divided into rational numbers and irrational numbers.
Integers are a subset of rational numbers which are a subset of real numbers which are a subset of complex numbers ...
there are roman numerals positive negative and natural numbers
Ephemeral port numbers and well-known port numbers.
Real and Complex. Real numbers are your everyday numbers that most people are familiar with and Complex numbers are Real numbers mixed with imaginary numbers. Of course this is a VERY BROAD oversimplification, and the question is somewhat vague in that there are other "types" of numbers that are used, but I think this is the answer you are looking for.
numbers
text and numbers
They are 2 different types of numbers, DAH!