# Is 135 a Prime Number?

Is 135 a prime number? Numbers having only 2 factors, i.e. 1 and the number itself are known as prime numbers whereas numbers with more than 2 factors are known as composite. The answer to the question whether 135 is a prime or composite is - * "135 is a composite number."* Now, let us find out how and why is 135 a prime number or a composite number?

**Is 135 a prime number? -**No**Is 135 a composite number? -**Yes**Prime Factors of 135 -**3, 5**Factors of 135 -**1, 3, 5, 9, 15, 27, 45, 135**Is 135 a perfect square? -**No

## Is 135 a Prime Number?

No, 135 is not a prime number. The number 135 is divisible by 1, 3, 5, 9, 15, 27, 45, 135. For a number to be classified as a prime number, it should have exactly two factors. Since 135 has more than two factors, i.e. 1, 3, 5, 9, 15, 27, 45, 135, it is not a prime number.

## Why is 135 not a Prime Number?

To understand whether 135 is prime or composite, it is important to find its factors.

**Factors of 135:** 1, 3, 5, 9, 15, 27, 45, 135

Since 135 has more than 2 factors, we can say that 135 is not a prime number.

## Is 135 a Composite Number?

Yes, since 135 has more than two factors i.e. 1, 3, 5, 9, 15, 27, 45, 135. In other words, 135 is a composite number because 135 has more than 2 factors.

**Problem Statements: **

Is 135 a Prime Number? | No |

Is 135 a Composite Number? | Yes |

Multiples of 135 | 135, 270, 405, 540, 675, 810, 945, 1080, 1215, 1350 |

Is 135 an Odd Number? | Yes |

Cube Root of 135 | 5.129919 |

Square of 135 | 18225 |

Is 135 an Even Number? | No |

Square Root of 135 | 11.61895 |

Is 135 a Perfect Cube? | No |

Is 135 a Perfect Square? | No |

**Fun Facts: **

- A pair of prime numbers X and Y are said to be twin prime numbers if the absolute difference between them is 2. Example - (311, 313) are twin prime numbers.
- A semiprime number is a composite number that is the product of exactly two prime numbers. Example - 115 is semiprime, since 115 can be written as 5 × 23.
- Prime numbers greater than 5 can be represented in the form of either 6n + 1 or 6n - 1. Example - 71 is a prime number and it can be written as 71 = 6 × 12 - 1

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