# Is 133 a Prime Number?

Is 133 a prime number? How do you know that 133 is prime or composite? Let us first understand what makes a number 'prime'. If a number has only 2 factors (1 and the number itself), then it is a prime number. If the number has more than 2 factors, then it is composite. Now, what do you think of 133? Is 133 a prime number? * "No, 133 is not a prime number."* Since 133 has more than 2 factors i.e. 1, 7, 19, 133, it is a composite number. Let's study this in detail.

**Is 133 a prime number? -**No**Is 133 a composite number? -**Yes**Factors of 133 -**1, 7, 19, 133**Is 133 a perfect square? -**No**Prime Factors of 133 -**7, 19

## Is 133 a Prime Number?

No, 133 is not a prime number. The number 133 is divisible by 1, 7, 19, 133. For a number to be classified as a prime number, it should have exactly two factors. Since 133 has more than two factors, i.e. 1, 7, 19, 133, it is not a prime number.

## Why is 133 not a Prime Number?

To understand whether 133 is composite or prime, it is important to find its factors.

**Factors of 133:** 1, 7, 19, 133

Since 133 has more than 2 factors, we can say that 133 is not a prime number.

## Is 133 a Composite Number?

Yes, since 133 has more than two factors i.e. 1, 7, 19, 133. In other words, 133 is a composite number because 133 has more than 2 factors.

**Problem Statements: **

Is 133 a Prime Number? | No |

Is 133 a Composite Number? | Yes |

Square Root of 133 | 11.532563 |

Multiples of 133 | 133, 266, 399, 532, 665, 798, 931, 1064, 1197, 1330 |

Is 133 an Even Number? | No |

Is 133 a Perfect Square? | No |

Is 133 an Odd Number? | Yes |

Is 133 a Perfect Cube? | No |

Square of 133 | 17689 |

Cube Root of 133 | 5.10446 |

**Fun Facts: **

- A perfect square (square number) is always a composite number.
- 1 is neither prime nor composite.
- 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

**☛ Also Check: **

- Is 10 a Prime Number? - No
- Is 2021 a Prime Number? - No
- Is 52 a Prime Number? - No
- Is 20 a Prime Number? - No
- Is 55 a Prime Number? - No
- Is 673 a Prime Number? - Yes
- Is 90 a Prime Number? - No
- Is 457 a Prime Number? - Yes

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