FANDOM


13 is a prime number from 1-100. 13 is prime because it only has 2 factors, 1 and 13. It is said to be an unlucky number, because of some reasons. It is the sixth prime number, and the sixth prime number between 1 to 100.

13

ProofsEdit

  • Yes — 13 can be divided by 1.
  • No — 13 cannot be divided by 2-12.
  • Yes — 13 can be divided by 13.
  • Therefore it has 2 factors.

As an Exponent of Mersenne NumberEdit

213 - 1, which is the number 8,191, is a prime number. It is the 5th Mersenne Prime.

​Relationship with other odd numbersEdit

The numbers beforeEdit

  • The previous odd number, 11, is a prime number.
    • There are no odd numbers between 11 and 13. As a result, they are twin primes.
  • The odd number previous to 11 is 9. 9 is a square number.
  • The odd number previous to 9 is 7. 7 is a prime number.
    • 7 and 13 are six numbers apart; therefore, they are sexy primes.

The numbers afterEdit

  • The next odd number, 15, is not a prime number. It is divisible by 3 and 5.
  • 17, the odd number following 15, is a prime number.
    • 13 and 17 are four numbers apart; therefore, they are cousin primes.
  • 19, the odd number following 17, is a prime number.
    • 13 and 19 are six numbers apart; therefore, they are sexy primes.

TriviaEdit

  • The fear of number 13 is called Triskaidekaphobia, which was founded at 1911.

Ad blocker interference detected!


Wikia is a free-to-use site that makes money from advertising. We have a modified experience for viewers using ad blockers

Wikia is not accessible if you’ve made further modifications. Remove the custom ad blocker rule(s) and the page will load as expected.