Determine the prime factorization of the following number:\[13915\]
Answer
690k+ views
Hint: To find the prime factors, start by dividing the number by the prime numbers and observe the remainders, if they are equal to 0 or not.
Start by dividing the number by the first prime number, which is $2$. If there is no remainder., it means you can divide evenly, then \[2\] is a factor of the number. Continue dividing by $2$ until you cannot divide evenly anymore. Write down how many \[2's\] you were able to divide the number by evenly. Now try dividing by the next prime factor, which is \[3\] . Ultimately the goal is to get to a quotient of \[1\].
\[13,915{\text{ }} \div {\text{ }}2{\text{ }} = {\text{ }}6,957.5\] - This has a remainder. Let's try another prime number.
\[13,915{\text{ }} \div {\text{ }}3{\text{ }} = {\text{ }}4,638.3333\] - This has a remainder. Let's try another prime number.
\[13,915{\text{ }} \div {\text{ }}5{\text{ }} = {\text{ }}2,783\] - There is no remainder. Hence, \[5\] is one of the factors.
\[2,783{\text{ }} \div {\text{ }}5{\text{ }} = {\text{ }}556.6\] - There is a remainder. We can't divide by \[5\] evenly anymore. Let's try the next prime number.
\[2,783{\text{ }} \div {\text{ }}7{\text{ }} = {\text{ }}397.5714\] - This has a remainder. \[7\] is not a factor.
\[2,783{\text{ }} \div {\text{ }}11{\text{ }} = {\text{ }}253\] - There is no remainder. Hence, \[11\] is one of the factors.
\[253{\text{ }} \div {\text{ }}11{\text{ }} = {\text{ }}23\] - There is no remainder. Hence, \[11\] is one of the factors.
\[23{\text{ }} \div {\text{ }}11{\text{ }} = {\text{ }}2.0909\] - There is a remainder. We can't divide by \[11\] evenly anymore. Let's try the next prime number
\[23{\text{ }} \div {\text{ }}13{\text{ }} = {\text{ }}1.7692\] - This has a remainder. \[13\] is not a factor.
\[23{\text{ }} \div {\text{ }}17{\text{ }} = {\text{ }}1.3529\] - This has a remainder. \[17\] is not a factor.
\[23{\text{ }} \div {\text{ }}19{\text{ }} = {\text{ }}1.2105\] - This has a remainder. \[19\] is not a factor.
\[23{\text{ }} \div {\text{ }}23{\text{ }} = {\text{ }}1\] - There is no remainder. Hence, \[23\] is one of the factors.
The prime factors of the given number are $5$, $11$, $23$.
As we can see, we can write $13915$ as $5 \times 11 \times 11 \times 23$. It can also be written in exponential form as ${5^1} \times {11^2} \times {23^1}$.
Note:
The prime factors of a number are all the prime numbers that, when multiplied together (while also taking in account the number of times they have occurred), equals the original number. You can find the prime factorization of a number by using a factor tree anddividing the number into smaller parts.
Recently Updated Pages
Write any three differences between metals and nonmetals class 10 social science CBSE

Amit standing on a horizontal plane finds a bird flying class 10 maths CBSE

Two circles of radii 5 cm and 3 cm intersect at two class 10 maths CBSE

Solve the following i John and Jivanti together have class 10 maths CBSE

What is the relation between orthocenter circumcentre class 10 maths CBSE

Two plane mirrors are inclined at 70circ A ray incident class 10 physics CBSE

Trending doubts
Explain the Treaty of Vienna of 1815 class 10 social science CBSE

Which country is known as "The land of Fire and Ice"?

1 GB equals how many MB?

10 examples of evaporation in daily life with explanations

What is the full form of POSCO class 10 social science CBSE

Which is the hottest planet in the Solar system A Earth class 10 social science CBSE

