The prime factorization of 423 is:
$$ 423 = 3\cdot3\cdot47 $$Which is the same as :
$$ 423 = 3^{2}\cdot47 $$Prime factorization can be nicely visualized by creating a factorization tree.
| 423 can be written as 3 × 141. |
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| 141 can be written as 3 × 47. |
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| The end nodes are the prime factors of the number 423. |
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