# Fun Fact! When you multiply ones, you will always get palindromic numbers.

A palindromic number is just a number that is the same reverse as it is forwards, for example, 23432.
So, if we multiply 1 by 1, we get 1. Okay, that was a lazy palindrome; let's move on.
11x11 = 121, 111x111 = 12321, 1111x1111 = 1234321, and so on.

Multiplying 111111111 by 111111111 yields 12345678987654321.
Furthermore, the two integers you are multiplying do not have to have the same amount of ones. For instance, 11x1111 = 12221 and

##### Related Facts

Pythagoras' Constant is the square root of two.

The only number that cannot be represented in Roman numerals is zero.

Fun Fact! Roman Numerals Were Invented as a Trading System

Fun Fact! There is just one number that is spelled with the same number of letters as the number itself.

Fun Fact! The number six is the smallest perfect number.

Fun Fact! The Number 9 Is Considered a "Magic" Number

Fun Fact! The number one is not a prime number.

Fun Fact! If a pizza has a radius of "Z" and a height of "A," the equation is

Fun Fact! A cake may be sliced into 8 equal pieces with only three slices.