# Is 13 a Prime Number?

Is 13 a Prime Number? * "Yes, 13 is a prime number."* A number can be classified as prime or composite depending on the factors it contains; it could either have only 2 factors or more than 2 factors. Numbers like 599 with only 2 factors, i.e. 1 and 599 are called prime numbers. However, numbers like 203 with more than 2 factors are called composite numbers. Let us find out how and why is 13 a prime number?

**Is 13 a prime number? -**Yes**Is 13 a composite number? -**No**Prime Factors of 13 -**13**Factors of 13 -**1, 13**Is 13 a perfect square? -**No

## Is 13 a Prime Number?

Yes, 13 is a prime number. The number 13 is divisible only by 1 and the number itself. For a number to be classified as a prime number, it should have exactly two factors. Since 13 has exactly two factors, i.e. 1 and 13, it is a prime number.

## How is 13 a Prime Number?

To understand whether 13 is prime or composite, it is important to find its factors.

**Factors of 13:** 1, 13

Therefore, we can say that 13 is a prime number since it has only 2 factors.

## Is 13 a Composite Number?

No, since 13 has only two factors, i.e. 1 and 13. In other words, 13 is not a composite number because 13 doesn’t have more than 2 factors.

**Problem Statements: **

Is 13 a Prime Number? | Yes |

Is 13 a Composite Number? | No |

Cube Root of 13 | 2.351333 |

Is 13 a Perfect Square? | No |

Is 13 an Even Number? | No |

Is 13 a Perfect Cube? | No |

Is 13 an Odd Number? | Yes |

Multiples of 13 | 13, 26, 39, 52, 65, 78, 91, 104, 117, 130 |

Square Root of 13 | 3.605551 |

**Fun Facts: **

- A palindrome prime is a prime number that when read in reverse order results in the same number. Examples - 787, 373, 353
- Euler discovered a polynomial n
^{2}+ n + 41 that produces prime numbers for values of n that lie between 0 and 39 inclusive. It can generate 40 prime numbers for 0 <= n <= 39. - 1 is neither prime nor composite.

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- Is 367 a Prime Number? - Yes
- Is 40 a Prime Number? - No
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- Is 93 a Prime Number? - No