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Imperial College London
Imperial College London
University of Oxford
University of Oxford
Harvard University
Harvard University
ETH Zurich
ETH Zurich
National University of Singapore
National University of Singapore
UCL
UCL
Peking University
Peking University
Nanyang Technological University
Nanyang Technological University
Tsinghua University
Tsinghua University
Princeton University
Princeton University
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EPFL
IIT Madras
IIT Madras
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Shanghai Jiao Tong University
Technical University of Munich
Technical University of Munich
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Australian National University
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Fudan University
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Seoul National University
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Columbia University
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Monash University
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University of Tokyo
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King's College London
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Zhejiang University

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Tool overview

Explore the use cases, workflow, and key things to know.

Different trees can agree

Splitting 60 as 6 × 10 or 4 × 15 gives the same multiset of prime leaves, in a different arrangement.

Keep multiplicity

Two leaves labeled 2 mean two factors of 2. Do not remove one as a duplicate.

Check before exporting

AI can draw a convincing tree with an incorrect product. Verify every split and the complete prime factorization.

Concept reference

Factor Tree: a worked example

The example splits 60 into 6 and 10, then splits those into 2 × 3 and 2 × 5. The leaves are 2, 3, 2 and 5. Their product is 60, and the repeated factor 2 gives the exponential form 2² × 3 × 5.

Factor tree showing 60 split into 6 and 10 with prime leaves 2 3 2 and 5
Original AI-generated factor tree reference commissioned by AcaDraw. Illustrative teaching example; review labels and relationships before use.

Factor Tree reference key

Use the reference and definitions together. On a small screen, scroll the table horizontally.

ElementMeaningReview check
RootA composite positive integerUse a number greater than one and identify whether it is already prime.
Factor pairTwo integers multiplying to the parentFor example, 6 × 10 = 60. Addition is not the tree rule.
Composite nodeA number with a further nontrivial factor pairContinue splitting 6 into 2 and 3.
Prime leafA prime number at a branch endStop at primes; 1 is not a prime factor.
Final productAll prime leaves multiplied togetherInclude repeated factors and verify the product equals the root.

Plan your factor tree

A correct factor tree preserves multiplication at every split, even when different first splits produce different shapes.

Different trees can agree

Splitting 60 as 6 × 10 or 4 × 15 gives the same multiset of prime leaves, in a different arrangement.

Keep multiplicity

Two leaves labeled 2 mean two factors of 2. Do not remove one as a duplicate.

Check before exporting

AI can draw a convincing tree with an incorrect product. Verify every split and the complete prime factorization.

Common mistakes to avoid

Addition used at a split

The parent equals the product of its two child factors, not their sum.

A composite leaf left unfinished

A leaf such as 6 needs to split further in a prime-factor tree.

One treated as prime

One is neither prime nor composite; it is not a prime-factor leaf.

Factor Tree Generator: from brief to checked draft

Reading the reference is free. Generating a new draft requires an account and available credits. See current pricing.

Choose Science Drawing for an illustrated draft, or Editable Diagram for separate shapes and labels. Review all definitions, labels and connections before sharing.

  1. 1

    Choose the root number

    Start with a positive composite integer.

  2. 2

    Draft the factor pairs

    Split each composite node into two factors.

  3. 3

    Verify the leaves

    Check that all leaves are prime and their product equals the root.

A prompt you can adapt

Create an editable factor tree for 60. Split 60 into 6 and 10, split 6 into 2 and 3, split 10 into 2 and 5. Highlight prime leaves and show 60 = 2 × 2 × 3 × 5 = 2² × 3 × 5. Do not omit repeated prime factors.

Use this prompt in the generator

Factor Tree FAQ

What is a factor tree?

It repeatedly splits composite numbers into factor pairs until all leaves are prime.

Can I start with a different factor pair?

Yes. Valid choices give the same prime factorization, apart from factor order.

Is one a prime factor?

No. One is not prime and is not included among the prime leaves.

Does the generator guarantee arithmetic accuracy?

No. Review generated text and branches and verify the multiplication independently.

Sources and editorial notes

Prepared by the AcaDraw product team. Source and diagram check: . This is a simplified educational model; independent expert review has not been completed. AI-generated drafts need checking against reliable references.