Three Most Interesting Numbers in Math

Math is something beautiful if you learn about it. All numbers are interesting, but there is something in PI, PHI and E that can make it more intriguing.

  1. Number e

    It is one of the most important numbers in Math, with Pi and imaginary number i. Number e is called “Number of Euler”, pertaining to Leonhard Euler, a mathematician who discovered it. This number, is also an irrational number. First decimal numbers of it are: 2.718281828459…

    Imagine that you have $1. And you deposit it into an imaginary box, that gives you 100% of your money the next year. One year later, you will have $2. But if you deposit it 6 months, you withdraw it and then deposit it for another six months, after a year you will have $2.25.

    The shorter you deposit it, the bigger the gain. The maximum you can gain is: e (2.7182…)

  2. Number Pi

    This number is similar to e, irrational, so we cannot express it as a fraction. First decimal numbers of it are: 3.141592… Also, Pi is known as .

    Number Pi is probably the most known number, and one of the most important.

    This number has a lot of uses, like resolving the perimeter of a circle ( · d) and the area of a circle ( · r²).

    I.e. you have a circle of 2 meters of diameter and you want to resolve its perimeter. In this case, you have to do:

    ( · d) = 3.14 · 2.

    Per = 6.28.

  3. Number Phi

    It is also called “the golden ratio” or “divine proportion”. It is an irrational number: 1.61803… and it is symbolized using the Greek letter Φ. Mathematicians, sculptors and intellectuals have studied this number for more than 2000 years.

    Number Phi appears in music, painting, architecture, nature, etc.

    You can find this number in the Fibonacci sequence, and in natural ratios.

    Phi can be found in:

    • Pyramids
    • Pentagram
    • Distribution of the leaves in the plants.
    • Relation between the length of our arm (fingers until shoulder) and the length until elbow.
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6 Responses to “Three Most Interesting Numbers in Math”
  1. LUCIA Says...

    On August 29, 2008 at 7:12 pm

    i`m Lucia from argentina, i`m sexteen years old and i like yours pictures ?


  2. CHAN LEE PENG Says...

    On October 17, 2008 at 11:10 am

    Good post, thanks and take care!

  3. JK Kristie Says...

    On October 17, 2008 at 9:49 pm

    Interesting post. I’m trying to love maths but my brain’s really having difficulty processing the subject. :P

  4. Ori Sonata Says...

    On February 26, 2009 at 10:37 am

    A good article for learning the basic. These numbers are where all mathematician start their study from.

  5. Morgan Says...

    On March 21, 2009 at 8:36 pm

    Phi is also interesting because it is the “most irrational” of all irrational numbers. Loosely speaking, this means that you can always find a sequence of rationals that converges to any other real number faster than any sequence of rationals that converges to phi.

  6. Guy Says...

    On February 2, 2010 at 12:14 pm

    How about ZERO! I think the 5 most interesting and important numbers are…e,i,pi,1,and0. now think about their relation.

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