<link rel="stylesheet" href="../../../css/skel.css" /> <link rel="stylesheet" href="../../../css/style.css" /> <link rel="stylesheet" href="../../../css/style-desktop.css" />


2 is a prime number and is the only even prime number. = 1 x 2

The number two has many properties in mathematics. An integer is called even if it is divisible by 2. For integers written in a numeral system based on an even number, such as decimal and hexadecimal, divisibility by 2 is easily tested by merely looking at the last digit.

There are more number 2's here.