The prime factorization of 654 is:
$$ 654 = 2\cdot3\cdot109 $$Prime factorization can be nicely visualized by creating a factorization tree.
| 654 can be written as 2 × 327. |
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| 327 can be written as 3 × 109. |
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| The end nodes are the prime factors of the number 654. |
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