Is 81 a element number? Numbers having actually only 2 factors, i.e. 1 and the number chin are recognized as prime numbers whereas number with much more than 2 factors are well-known as composite. The answer come the concern whether 81 is a element or composite is - * "81 is a composite number."* Now, let us find out how and also why is 81 a prime number or a composite number?

**Is 81 a element number? -**No

**Is 81 a composite number? -**Yes

**Is 81 a perfect square? -**Yes

**Prime factors of 81 -**3

**Factors that 81 -**1, 3, 9, 27, 81

## Is 81 a prime Number?

No, 81 is not a prime number. The number 81 is divisible through 1, 3, 9, 27, 81. Because that a number to be classified as a element number, it have to have specifically two factors. Because 81 has an ext than 2 factors, i.e. 1, 3, 9, 27, 81, the is no a prime number.

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## Why is 81 not a prime Number?

To recognize whether 81 is composite or prime, the is crucial to uncover its factors.

**Factors of 81:** 1, 3, 9, 27, 81

Since 81 has more than 2 factors, we can say the 81 is no a prime number.

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## Is 81 a Composite Number?

Yes, because 81 has much more than two components i.e. 1, 3, 9, 27, 81. In other words, 81 is a composite number because 81 has much more than 2 factors.

**Problem Statements: **

Is 81 a element Number? | No |

Is 81 a Composite Number? | Yes |

Cube source of 81 | 4.326742 |

Multiples of 81 | 81, 162, 243, 324, 405, 486, 567, 648, 729, 810 |

Square source of 81 | 9 |

Square of 81 | 6561 |

Is 81 a Perfect Square? | Yes |

Is 81 an even Number? | No |

Is 81 one Odd Number? | Yes |

Is 81 a Perfect Cube? | No |

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