A Logarithm in mathematics is a number that shows how many times a base number is multiplied by itself to produce a third number.

The base of the natural logarithm; Its value is approximately 2.718 and has been calculated to 869,894,101 decimal places by Sebastian Wedeniwski. The number e was first studied by the Swiss mathematician Leonhard Euler in the 1720s, although its existence was more or less implied in the work of John Napier, the inventor of logarithms, in 1614. Euler was also the first to use the letter e for it in 1727 (the fact that it is the first letter of his surname is coincidental). As a result, sometimes e is called the Euler Number, the Eulerian Number, or Napier's Constant. It was proven by Euler that "e" is an irrational number, so its decimal expansion never terminates, nor is it ever periodic.

The base of the natural logarithm; Its value is approximately 2.718 and has been calculated to 869,894,101 decimal places by Sebastian Wedeniwski. The number e was first studied by the Swiss mathematician Leonhard Euler in the 1720s, although its existence was more or less implied in the work of John Napier, the inventor of logarithms, in 1614. Euler was also the first to use the letter e for it in 1727 (the fact that it is the first letter of his surname is coincidental). As a result, sometimes e is called the Euler Number, the Eulerian Number, or Napier's Constant. It was proven by Euler that "e" is an irrational number, so its decimal expansion never terminates, nor is it ever periodic.

The Hausdorff Dimension calculator computes the Hausdorff dimension for geometric shapes typically represented by fractal graphics.

The Number 137 is well-known throughout the physics community as the approximate inverse of the Fine Structure constant. It even has a name - alpha - which seems to be a supernatural coincidence given the context in which this number appears - John 1.1-5 - and the numerous highly significant identities associated with the Greek word Alpha.