The prime factorization of 999999 is:
$$ 999999 = 3\cdot3\cdot3\cdot7\cdot11\cdot13\cdot37 $$Which is the same as :
$$ 999999 = 3^{3}\cdot7\cdot11\cdot13\cdot37 $$Prime factorization can be nicely visualized by creating a factorization tree.
| 999999 can be written as 3 × 333333. |
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| 333333 can be written as 3 × 111111. |
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| 111111 can be written as 3 × 37037. |
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| 37037 can be written as 7 × 5291. |
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| 5291 can be written as 11 × 481. |
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| 481 can be written as 13 × 37. |
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| The end nodes are the prime factors of the number 999999. |
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