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What number is a factor of 21 and a prime number?

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Anonymous

∙ 10y ago
Updated: 8/21/2019

21 = 3 x 7

both 3 and 7 are prime numbers

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Wiki User

∙ 10y ago
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Related Questions

Is 21 a factor of a prime number?

No. The only factors of a prime number are 1 and itself. The only way that 21 could be a factor of a prime number is if it were a prime number, but it is not because 21 is also divisible by 3 and 7.


What is a prime number for 12 and 21?

3 is a prime factor of 12 and of 21.


What number is it has 90 as a factor thre number is prime 21 is the multiple of the number?

If 21 is a multiple of the number, the number cannot have 90 as a factor.


What is the composite number between 20 and 50 whose prime factor is 21?

21 is not a prime factor, it is 3 x 7


What prime number is a factor of 21?

3 and 7


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3


Which number is a factor of 21 an also a prime number?

They are: 3 and 7


What number is a factor of 70 is a prime number and 21 is a multiple?

7


Which number is a factor of 21 and also a prime number?

3 and 7


What are the prime of factors of 21?

prime factor = prime number which can be divided into the given number with no remainder The prime factors of 21 are 3 and 7.


What is the factor tree of 21?

3x7=21 3 and 7 are prime numbers, so 3x7 is the factor tree of the number 21.


Write each number 21 prime factor?

3 x 7 = 21

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