The folowing table expresses '3' in various number bases. 'DR_{x}' shows the result of 'digit reducing' resulting in an X-digit long number.

Base | DR_{2} | DR_{1} |
---|---|---|

2 | 11,10 | 1 |

3 | 10 | 1 |

4 | 3 | |

5 | 3 | |

6 | 3 | |

7 | 3 | |

8 | 3 | |

9 | 3 | |

10 | 3 | |

11 | 3 | |

12 | 3 | |

13 | 3 | |

14 | 3 | |

15 | 3 | |

16 | 3 |

Factors: Prime

3 is the 4th Fibonacci number.

3 is in the Pythagorean Triple: (3, 4, 5).

3 is the sum of the counting numbers from 1 to 2 (See 'The Sum/Product of the First N Counting Numbers').

3 is the 1st Mersenne number (*p*=2).

A 'Triangle (or Trigon)' is a 'regular polygon' with 3 sides.

3 is the atomic weight of Lithium (Li).

Earth is the 3rd planet in our solar system. See Planets.

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