Best Answer

If all the factors are prime numbers and they total the original number, you have found them all.

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: 210

210 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 = 210

That's the prime factorization of 210.

Study guides

☆☆

Q: How do you know when you have found all the prime factors?

Write your answer...

Submit

Still have questions?

Continue Learning about Math & Arithmetic

If it has no prime factors in common. The prime factors of 16 are all twos and the prime factors of 27 are all threes. 16/27 has to be in simplest form.

You don't.If you know just one factor, other than 1 and the number itself, you will know that the number is composite.A prime has only two factors: 1 and itself. So all the factors is no big deal.

All the prime factors of 76 are 2 and 19.

All numbers have factors. Some factors are prime numbers. These are known as prime factors. 2 and 3 are prime factors of 6. 1 and 6 are not prime factors of 6.

Apart from 1, all of the other factors of 72 are multiples of prime factors.

Related questions

When all the factors are prime.

When all the factors are prime.

All of the factors are prime.

If you multiply all the prime factors you've found together and the result is the number, you have found all of them.

All of the factors are prime.

When all of the factors are prime.

Once all the prime factors of a number have been found, the number of factors the number has and what they are can be found. I'd be finding the prime factors first before finding all the factors of a number, so I'd rather find all the prime factors as it means I can stop before I have to do more work in finding all the factors.

If it has no prime factors in common. The prime factors of 16 are all twos and the prime factors of 27 are all threes. 16/27 has to be in simplest form.

When all of the factors are prime. The longest factor string is the prime factorization.

No. There are techniques to find if it is prime

How to know that you found all the factors for example my teacher taught me that when u reach a double diget number that is all the factors. ( 6x6)-~ double diget number

The prime factors are 2x2x2x13 All factors are 1,104,2,52,4,26,8,13

People also asked

Featured Questions