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18 has prime factors 3 & 2 whereas 21 has prime factors 3 & 7.

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โˆ™ 2011-08-12 12:22:22
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Q: What are the prime factors for 18 and 21?
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Related questions

What are the factors and prime factors of 18 and 21?

The factors of 18 are: 1, 2, 3, 6, 9, and 18.The prime factors of 18 are: 2 and 3.The factors of 21 are: 1, 3, 7, and 21.The prime factors of 21 are: 3 and 7.


Prime factorization of 18 and 21?

The factors of 18 are: 1 2 3 6 9 18 The prime factors are: 2 x 3 x 3 and The factors of 21 are: 1 3 7 21 The prime factors are: 3 x 7


What are the factors and prime factors of 21 and 36?

The factors of 21 are 1, 3, 7, 21. 3 and 7 are prime. The factors of 36 are 1, 2, 3, 4, 6, 9, 12, 18, 36. 2 and 3 are prime.


Prime factors of 21?

The prime factors of 21 are 3,7.


What is the product of the prime factors of 18?

The prime factors of 18 are 2, 3, and 3. The product of these prime factors is 18.The distinct prime factors of 18 are 2 and 3. The product of these distinct prime factors is 6.


What are the prime of factors of 21?

The prime factors of 21 are 3 x 7.


What factors of 18 are prime?

2 and 3 are the prime factors of 18.


What are the factors and prime factors of 15 and 21?

The factors of 15 are: 1, 3, 5, and 15.The prime factors of 15 are: 3 and 5.The factors of 21 are: 1, 3, 7, and 21.The prime factors of 21 are: 3 and 7.


What are the factors and prime factors of 17 and 21?

17 is a prime number. It is only evenly divisible by itself and one.The factors of 21 are: 1, 3, 7, and 21.The prime factors of 21 are: 3 and 7.


What is the least common multiple of 10 18 21 by using by using prime factors?

The Least Common Multiple of 10, 18, 21 is 630.


How can you write 21 as a product of its prime factors?

As a product of its prime factors: 3*7 = 21


What are the prime factors and prime factors of 21?

1, 3, 7, 21 3 and 7 are prime.


What are the factors and prime factors of 21 squared?

The prime factors of 21 are 3 x 7, so the prime factors of 21 squared are 32 x 72. The factors of 21 squared are 1, 3, 7, 9, 21, 49, 63, 147, and 441.


What is the factors and prime factors of 21?

The factors are 1, 3, 7 and 21. 3 and 7 are prime.


What are prime numbers of 21?

factors of 21: 3, 7 prime factors of 21: 3, 7


What is the prime factors of 18 and 15?

Prime factors of 18 are 2 and 3 Prime factors of 15 are 3 and 5


What are factors of 18 that are prime numbers?

Prime factors of 18 are 2 and 3.


What are the factors and prime factors of 21 in exponet form?

The factors of 21 are: 1 3 7 21 The prime factors are: 3 and 7


What are the factors and prime factor of 21?

The factors are: 1, 3, 7, 21 The prime factors are: 3, 7


What prime factors do 18 and 70 have in common?

The prime factors of 18 are 2, 3, and 3. The prime factors of 70 are 2, 5, and 7. The prime factors that 18 and 70 have in common are a single 2.


What is the prime factorization of 21?

The prime factors of 21 are 3 and 7.


How many prime numbers are there in 21?

21 has two prime factors.


What are the prime factors in common of 18 and 90?

The prime factors of 18 are 2, 3, and 3. The prime factors of 90 are 2, 3, 3, and 5. The prime factors they have in common are 2, 3, and 3. Since 18 is a factor of 90, its prime factors will be the prime factors that the two numbers have in common.


What are the factors of 18 and 21?

The factors of 21 are 1, 3, 7 and 21. The factors of 18 are 1, 2, 3, 6, and 18.


What are the factors for 18 and 21?

The factors of 18 are: 1, 2, 3, 6, 9, 18The factors of 21 are: 1, 3, 7, 21