# Is 161 a Prime Number?

Is 161 a prime number? A prime number is divisible only by 1 and itself, which means it has no other divisor except 1 and the number itself. On the contrary, composite numbers have more than two factors. To determine if 161 is a prime number or composite, we need to divide it with numbers from 1 to 161. To find out the answer to this question * "is 161 is a prime number"* and to gain a detailed understanding of

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**"how and why is 161 a prime number or a composite number?"****Is 161 a prime number? -**No**Is 161 a composite number? -**Yes**Is 161 a perfect square? -**No**Prime Factors of 161 -**7, 23**Factors of 161 -**1, 7, 23, 161

## Is 161 a Prime Number?

No, 161 is not a prime number. The number 161 is divisible by 1, 7, 23, 161. For a number to be classified as a prime number, it should have exactly two factors. Since 161 has more than two factors, i.e. 1, 7, 23, 161, it is not a prime number.

## Why is 161 not a Prime Number?

To understand whether 161 is prime or composite, it is important to find its factors.

**Factors of 161:** 1, 7, 23, 161

Since 161 has more than 2 factors, we can say that 161 is not a prime number.

## Is 161 a Composite Number?

Yes, since 161 has more than two factors i.e. 1, 7, 23, 161. In other words, 161 is a composite number because 161 has more than 2 factors.

**Problem Statements: **

Is 161 a Prime Number? | No |

Is 161 a Composite Number? | Yes |

Cube Root of 161 | 5.440113 |

Is 161 a Perfect Cube? | No |

Is 161 an Odd Number? | Yes |

Square Root of 161 | 12.688578 |

Multiples of 161 | 161, 322, 483, 644, 805, 966, 1127, 1288, 1449, 1610 |

Is 161 an Even Number? | No |

Square of 161 | 25921 |

Is 161 a Perfect Square? | No |

**Fun Facts: **

- A perfect square (square number) is always a composite number.
- 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. - 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 117 a Prime Number? - No
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- Is 25 a Prime Number? - No
- Is 83 a Prime Number? - Yes
- Is 7 a Prime Number? - Yes
- Is 571 a Prime Number? - Yes
- Is 997 a Prime Number? - Yes
- Is 823 a Prime Number? - Yes

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