Originally defined as the ratio between the circumference of a circle and its diameter, pi — written as the Greek letter π — ...

The famous mathematical ratio, estimated to more than 22 trillion digits (and counting), is the perfect symbol for our species’ long effort to tame infinity. By Steven Strogatz This article, ...

On March 14 mathematicians everywhere enjoy a slice of pie as they recite the digits of math's most famous constant. Pi, defined as the ratio between the circumference of a circle and its diameter, is ...

Write a number as a product of its prime factors To be able to find factors and write a number as a product of prime factors, having knowledge of powers and indices is useful. Remember: To find all ...