Question
Determine the prime-power representation of each of the following integers. \( \begin{array}{lll}\text { (a) } 59,930,332 & \text { (b) } 48,400 & \text { (c) } 1,882,384 \\ \text { (d) Which numbers in parts } & \text { (a), (b), and (c) are squares? } \\ \text { (e) What can you say about the prime-power representation of a square? Explain briefly. } \\ \text { (f) Guess how you might know that from a glance at its prime-power representation that } \\ 27,543,608 \text { is the cube of a natural number. Explain. }\end{array} \) (a) The prime-power representation of \( 59,930,332 \) is (Type your answer using exponential notation.)
Ask by Nunez Carlson. in the United States
Mar 09,2025
Upstudy AI Solution
Tutor-Verified Answer
Answer
\(59,\!930,\!332 = 2^2 \cdot 7^3 \cdot 11^2 \cdot 19^2\).
Solution
\[
59,\!930,\!332 = 2^2 \cdot 7^3 \cdot 11^2 \cdot 19^2.
\]
Step-by-step solution:
1. Since the number ends in 2, it is even. Dividing by 2:
\[
\frac{59,\!930,\!332}{2} = 29,\!965,\!166.
\]
2. The quotient ends with 6, so it is even. Dividing by 2 again:
\[
\frac{29,\!965,\!166}{2} = 14,\!982,\!583.
\]
At this point, we have:
\[
59,\!930,\!332 = 2^2 \cdot 14,\!982,\!583.
\]
3. Testing divisibility of \(14,\!982,\!583\) by 7, note that:
\[
7 \times 2,\!140,\!369 = 14,\!982,\!583.
\]
Thus,
\[
14,\!982,\!583 = 7 \cdot 2,\!140,\!369.
\]
4. Next, factor \(2,\!140,\!369\). Dividing by 7 again gives:
\[
2,\!140,\!369 = 7 \times 305,\!767.
\]
So far, we have:
\[
59,\!930,\!332 = 2^2 \cdot 7^2 \cdot 305,\!767.
\]
5. Dividing \(305,\!767\) by 7:
\[
305,\!767 = 7 \times 43,\!681.
\]
Now the factorization is:
\[
59,\!930,\!332 = 2^2 \cdot 7^3 \cdot 43,\!681.
\]
6. Notice that \(43,\!681\) is a perfect square, since:
\[
209^2 = 43,\!681.
\]
And since \(209 = 11 \cdot 19\), we have:
\[
43,\!681 = 11^2 \cdot 19^2.
\]
7. Combining all factors, the prime-power representation is:
\[
59,\!930,\!332 = 2^2 \cdot 7^3 \cdot 11^2 \cdot 19^2.
\]
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Extra Insights
To determine the prime-power representation of the integer \( 59,930,332 \), we can first factor it into its prime components. The prime factorization is given by: \( 59,930,332 = 2^2 \times 3^3 \times 7^1 \times 11^1 \times 13^1 \times 17^1 \) Thus, the prime-power representation of \( 59,930,332 \) is: \( 2^2 \times 3^3 \times 7^1 \times 11^1 \times 13^1 \times 17^1 \)