By which smallest number must the following number be divided so that the quotient is a perfect cube?
7803
On factorising 7803 into prime factors, we get:
\[7803 = 3 \times 3 \times 3 \times 17 \times 17\]
On grouping the factors in triples of equal factors, we get:
\[7803 = \left\{ 3 \times 3 \times 3 \right\} \times 17 \times 17\]
It is evident that the prime factors of 7803 cannot be grouped into triples of equal factors such that no factor is left over. Therefore, 7803 is a not perfect cube. However, if the number is divided by (\[17 \times 17 = 289\]), the factors can be grouped into triples of equal factors such that no factor is left over.
Thus, 7803 should be divided by 289 to make it a perfect cube.
Concept: Concept of Cube Root
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