PI 1 million digits: One Million Digits of Pi

<p>PI</p><p>The number &pi; is a mathematical constant that is the ratio of a circle's circumference to its diameter approximately equal to 3.14159. The number &pi; appears in many formulas across mathematics and physics. It is an irrational number meaning that it cannot be expressed exactly as a ratio of two integers although fractions such as 22/7 are commonly used to approximate it. Consequently its decimal representation never ends nor enters a permanently repeating pattern. It is a transcendental number meaning that it cannot be a solution of an equation involving only sums products powers and integers. The transcendence of &pi; implies that it is impossible to solve the ancient challenge of squaring the circle with a compass and straightedge. The decimal digits of &pi; appear to be randomly distributed[a] but no proof of this conjecture has been found.</p>