## What is the prime factorization of 81?

The prime factorization of 81 is 3 × 3 × 3 × 3 = **34**. Therefore, the prime factor of 81 is 3, which can be multiplied to get the other factors.... read more ›

## What is the factor tree of 81?

Factor Tree of 81 to Calculate the Factors

On splitting 27 further and writing it as multiples of numbers it would be 9 x 3. On splitting 9 further and writing it as multiples of numbers it would be 3 x 3. Altogether expressing the number in terms of prime factors would be 3 x 3 x 3 x 3.... see more ›

## How many factors is 81?

No, 6 is not a factor of 81 since the factors of 81 are **1, 3, 9, 27, and 81**.... see details ›

## Is 81 a perfect square?

Informally: When you multiply an integer (a “whole” number, positive, negative or zero) times itself, the resulting product is called a square number, or a perfect square or simply “a square.” So, **0, 1, 4, 9, 16, 25, 36, 49, 64, 81, 100, 121, 144, and so on, are all square numbers**.... continue reading ›

## What are the multiples of 81?

Solution: The first 10 multiples of 81 are **81, 162, 243, 324, 405, 486, 567, 648, 729 and 810**. Therefore, Sum of first 10 multiples: 81 + 162 + 243 + 324 + 405 + 486 + 567 + 648 + 729 + 810 = 4455.... see more ›

## Why is 81 not a prime number?

No, 81 is not a prime number. The number 81 is divisible by 1, 3, 9, 27, 81. For a number to be classified as a prime number, it should have exactly two factors. Since **81 has more than two factors**, i.e. 1, 3, 9, 27, 81, it is not a prime number.... view details ›

## What is the LCM of 81?

Numbers | LCM |
---|---|

81 and 5 | 405 |

81 and 6 | 162 |

81 and 7 | 567 |

81 and 8 | 648 |

## How do you get to 81?

81 = **1 x 81, 3 x 27, or 9 x 9**.... see more ›

## What is the highest common factor of 81?

Answer: Factors of 81 are **1, 3, 9, 27, 81**. There are 5 integers that are factors of 81. The greatest factor of 81 is 81.... continue reading ›

## What is the factor tree of 80?

The factors of 80 are **1, 2, 4, 5, 8, 10, 16, 20, 40, and 80**. Hence, the prime factors of 80 are 2 and 5.... view details ›

## What is factor tree?

Factor trees are **a way of expressing the factors of a number, specifically the prime factorization of a number**. Each branch in the tree is split into factors. Once the factor at the end of the branch is a prime number, the only two factors are itself and one so the branch stops and we circle the number.... see details ›

## What are the factors of 81 and 16?

Answer: The gcf of 81 and 16 can be obtained like this: The factors of 81 are **81, 27, 9, 3, 1**. The factors of 16 are 16, 8, 4, 2, 1. The common factors of 81 and 16 are 1, intersecting the two sets above.... see details ›