# Is 171 a Prime Number?

Is 171 a prime number? How do you know that 171 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 171? Is 171 a prime number? * "No, 171 is not a prime number."* Since 171 has more than 2 factors i.e. 1, 3, 9, 19, 57, 171, it is a composite number. Let's study this in detail.

**Is 171 a prime number? -**No**Is 171 a composite number? -**Yes**Factors of 171 -**1, 3, 9, 19, 57, 171**Is 171 a perfect square? -**No**Prime Factors of 171 -**3, 19

## Is 171 a Prime Number?

No, 171 is not a prime number. The number 171 is divisible by 1, 3, 9, 19, 57, 171. For a number to be classified as a prime number, it should have exactly two factors. Since 171 has more than two factors, i.e. 1, 3, 9, 19, 57, 171, it is not a prime number.

## Why is 171 not a Prime Number?

To understand whether 171 is composite or prime, it is important to find its factors.

**Factors of 171:** 1, 3, 9, 19, 57, 171

Since 171 has more than 2 factors, we can say that 171 is not a prime number.

## Is 171 a Composite Number?

Yes, since 171 has more than two factors i.e. 1, 3, 9, 19, 57, 171. In other words, 171 is a composite number because 171 has more than 2 factors.

**Problem Statements: **

Is 171 a Prime Number? | No |

Is 171 a Composite Number? | Yes |

Square Root of 171 | 13.076697 |

Is 171 an Even Number? | No |

Multiples of 171 | 171, 342, 513, 684, 855, 1026, 1197, 1368, 1539, 1710 |

Is 171 a Perfect Cube? | No |

Square of 171 | 29241 |

Is 171 an Odd Number? | Yes |

Cube Root of 171 | 5.55049 |

Is 171 a Perfect Square? | No |

**Fun Facts: **

- 5 is the only prime number having the last digit as 5.
- A palindrome prime is a prime number that when read in reverse order results in the same number. Examples - 10601, 11311, 12421
- All primes except 2 are odd.

**☛ Also Check: **

- Is 10 a Prime Number? - No
- Is 21 a Prime Number? - No
- Is 27 a Prime Number? - No
- Is 22 a Prime Number? - No
- Is 48 a Prime Number? - No
- Is 449 a Prime Number? - Yes
- Is 271 a Prime Number? - Yes
- Is 811 a Prime Number? - Yes

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