It is even, and is the only even prime (the primes other than 2 are called the odd primes). Explore math with our beautiful, free online graphing calculator. The graphing features turn abstract equations into pictures that actually make sense.
The number two (2) is the second positive integer and the first prime number. Graph functions, plot points, visualize algebraic equations, add sliders, animate graphs, and more. The digit used in the modern western world to represent the number 2 traces its roots back to the indic brahmic script, where 2 was written as two horizontal lines.
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