Euler’s number e is a mathematical constant that begins with 2.71828. Just like pi (π), it is non-terminating, which means it goes on and on. It is also an irrational number, ...

Euler’s constant explains so much about math and physics. We delve into the number e, or Euler’s number, to find out why it’s so special.

The mathematical constant of Pi is playing Pokémon on Twitch—after 25,000 hours it's curbstomped two children and power-levelled its starter, but is yet to escape the first town.

The decimal digits of the mathematical constant pi, 3.14159265. . ., ring out an intricate melody that sounds vaguely medieval. Those of the constant e, 2.718281828. . ., progress at a relentless ...

The constant ‘e’ February offers another blockbuster constant, Euler’s number e, which has the value 2.718…. So mark next Feb. 7 for the shindig. To understand e, consider “doubling” growth again, but ...

The mathematical constant π has been calculated in numerous ways over the centuries. For instance, π is defined as the ratio of the circumference of a circle to its diameter.

Pi has been a known mathematical constant for nearly 4,000 years. The earliest textual evidence of π dates back to 1900 BCE. Both the Babylonians and the Egyptians had a rough idea of the value.

The letter "i" stands in for an imaginary number, the square root of -1; while "e" is a mathematical constant approximately equal to 2.71828 — but, like pi, it's irrational.

The constant e is a big part of calculus – and turns up in all kinds of natural phenomena. Next on our calendar of mathematical constants would come pi, of course, for March.