Discover a lot of information on the number 13: properties, mathematical operations, how to write it, symbolism, numerology, representations and many other interesting things!

## Mathematical properties of 13

Questions and answers |

Is 13 a prime number? |
Yes |

Is 13 a perfect number? |
No |

Number of divisors |
2 |

List of dividers |
1, 13 |

Sum of divisors |
14 |

Prime factorization |
13 |

Prime factors |
13 |

## How to write / spell 13 in letters?

In letters, the number 13 is written as: Thirteen. And in other languages? how does it spell?

13 in other languages |

Write 13 in english |
Thirteen |

Write 13 in french |
Treize |

Write 13 in spanish |
Trece |

Write 13 in portuguese |
Treze |

## Decomposition of the number 13

The number 13 is composed of:

1 iteration **of the number 1** : The number 1 (one) represents the uniqueness, the unique, a starting point, a beginning.... Find out more about the number 1

1 iteration **of the number 3** : The number 3 (three) is the symbol of the trinity. He also represents the union.... Find out more about the number 3

## Mathematical representations and links

Other ways to write 13 |

In letter |
Thirteen |

In roman numeral |
XIII |

In binary |
1101 |

In octal |
15 |

In hexadecimal |
d |

In US dollars |
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USD 13.00 ($) |

In euros |
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13,00 EUR (€) |

Some related numbers |

Previous number |
12 |

Next number |
14 |

Next prime number |
17 |

## Mathematical operations

Operations and solutions |

13*2 |
= |
26 |
The double of 13 is 26 |

13*3 |
= |
39 |
The triple of 13 is 39 |

13/2 |
= |
6.5 |
The half of 13 is 6.500000 |

13/3 |
= |
4.3333333333333 |
The third of 13 is 4.333333 |

13^{2} |
= |
169 |
The square of 13 is 169.000000 |

13^{3} |
= |
2197 |
The cube of 13 is 2197.000000 |

√13 |
= |
3.605551275464 |
The square root of 13 is 3.605551 |

log(13) |
= |
2.5649493574615 |
The natural (Neperian) logarithm of 13 is 2.564949 |

log10(13) |
= |
1.1139433523068 |
The decimal logarithm (base 10) of 13 is 1.113943 |

sin(13) |
= |
0.42016703682664 |
The sine of 13 is 0.420167 |

cos(13) |
= |
0.9074467814502 |
The cosine of 13 is 0.907447 |

tan(13) |
= |
0.46302113293649 |
The tangent of 13 is 0.463021 |