The prime factorization of 1681 is:
$$ 1681 = 41\cdot41 $$Which is the same as :
$$ 1681 = 41^{2} $$Prime factorization can be nicely visualized by creating a factorization tree.
| 1681 can be written as 41 × 41. |
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| The end nodes are the prime factors of the number 1681. |