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Q: Why are prime numbers at the bottom of the factor tree?

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The bottom branch of a factor tree consists entirely of prime numbers.

Factor trees are ways of notating the process of finding the prime factorization of a given composite number and, as such, should result in an identifiable string of prime factors.

A factor tree is a way of notating the process of finding the prime factorization of a given number. As long as the bottom branch consists entirely of prime numbers, it doesn't really matter how they're lined up.

a factor tree

with a factor tree a factor birthday cake or writing out the factors (you may google what a factor tree and or what a factor birthday cake is :D )

Related questions

The bottom branch of a factor tree consists entirely of prime numbers.

When the bottom branch is all prime numbers.

When the bottom branch consists entirely of prime numbers.

When the bottom branch consists entirely of prime numbers.

When the bottom row consists of all prime numbers.

A factor tree is a way to notate the process of finding the prime factorization of a given number. A factor tree is complete when the bottom branch (row) consists entirely of prime numbers.

When you can no longer break down factors. when all the numbers at the bottom are prime!

A factor tree is a representation of the process of finding the prime factorization of a given number. It's complete when the bottom branch consists entirely of prime numbers.

as you can obviously see the bottom of a factor tree would be the curious numbers of 2,2,3,5

Since prime numbers only have one prime factor (themselves), factor trees are unnecessary.

Factor trees are ways of notating the process of finding the prime factorization of a given composite number and, as such, should result in an identifiable string of prime factors.

2,2,3,7

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