The prime factorization of 438 is:
$$ 438 = 2\cdot3\cdot73 $$Prime factorization can be nicely visualized by creating a factorization tree.
| 438 can be written as 2 × 219. |
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| 219 can be written as 3 × 73. |
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| The end nodes are the prime factors of the number 438. |
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