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You could try dividing by composite numbers but the number that you are testing is divisible by a composite number, then it will be divisible by a prime factor of that composite number and that prime factor will be smaller. It is always easier to work with smaller numbers.

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8y ago
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8y ago

The very definition of "composite number" is that you can split it up into smaller factors. Eventually, you can express any number as a product of one or more prime numbers.

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Q: To find a composite number why divide by prime numbers?
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Related questions

Does the prime factorization of a composite number includes prime and composite numbers?

yes you are supposed to circle the prime#s and divide the composite


Is a 168 a prime number?

No, it is composite. All numbers except 2 are composite because 2 will divide into them.


What is the number or product of a number and a variable?

if divide the prime numbers by the compositenumber it will give you a greater number that is either a prime number or composite.


Is 48 prime or composite and tell you the numbers?

48 is not a prime number it can be divide by 8, 2 and 4


What are prime numbers ans composite numbers?

Prime numbers are numbers that only 1 and the number itself can be divided into (e.g, 3: no other number can divide into it) Composite numbers are numbers that more than 1 number besides itself and 1 can be divided into (e.g, 9: more than 1 number can divide into 9).


Is 6 prime or composite numbers?

6 is a composite number. You can divide it by 3 and get 2. A composite number can be divided by a number and get another number out. 29 is prime because it can only be divided by 1 and 29 to get a whole number answer.


Name the two composite numbers that are prime?

No composite numbers are prime. A composite number is a number that can be made by multiplying other numbers. A prime number is made only by one and itself. Therefore no number can be both prime and composite


Can you change composite numbers to prime numbers?

No, You can't change a composite number to prime number.


Does the prime factorization of any composite number include prime and composite numbers?

Prime factorization never includes a composite number. All numbers in prime factorization must be prime numbers.


Prime is writing a composite number as a product of prime numbers?

Prime factorization is writing a composite number as a product of prime numbers.


What are prime the numbers and the composite numbers?

A prime number is 2 factors and a composite number is 3 or more!


What is the prime factorization of a composite number?

A composite number has three or more factors. All composite numbers can be expressed as unique products of prime numbers. This is accomplished by dividing the original number and its factors by prime numbers until all the factors are prime. A factor tree can help you visualize this.Example: 210210 Divide by two.105,2 Divide by three.35,3,2 Divide by five.7,5,3,2 Stop. All the factors are prime.2 x 3 x 5 x 7 = 210That's the prime factorization of 210.