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Is 21 one a prime

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โˆ™ 2013-12-12 15:04:05

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No 21 is not a Prime number because it has more than two factors therefore it is a composite number

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โˆ™ 2013-12-12 15:04:05
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Factoring and Multiples

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Related questions

Is 21 a prime number or a composite number?

21 is a Composite Number. A prime number is a whole number that only has two factors which are itself and one. A composite number has factors in addition to one and itself. 21 is divisible by 3 and 7.


Is 21 seven a prime number?

21 is the product of two prime numbers, three and seven. A prime number is defined as a number divisible only by one or itself. So ... NO ... 21 is not a prime number.


What one is a prime number 21 23 25?

23 is a prime number.


Which one is prime 21 25 23?

Only 23 is a prime number.


Which one is a prime number 19 21 or 23?

19 and 23 are prime.


What is the prime factorization of twenty one?

The prime factorization of 21 is: 3 x 7


Is the prime factorization of forty twenty one times two?

21 x 2 does not equal 40. 21 is not a prime number.


Which one is prime out of 21 23 22 27?

23


What is the prime numbers of 21?

Do you mean, "What is the prime factorization of 21?"


Prime factors of 21?

The prime factors of 21 are 3,7.


Is 21 relatively prime?

It can be. 21 is relatively prime with 32.


What is the prime factorizatiion of 21?

The prime factorization for 21 is 3x7.


Is 21 and 89 a pair of prime numbers?

21 is not prime.


Is number 21 prime or composite?

number 21 is prime


Is 21 prime or not prime?

21 = 3x7, and so is not prime, as it can be expressed as the product of multiple prime numbers


Is the number 21 prime composite or neither?

3 * 7 = 21 21 is not prime


What is the prime factorization for 21?

The prime factorization for 21 is: 3x73 x 7 = 21


Is the prime number 21 is a prime number?

21 is a composite number, not a prime, having prime factors 3x7.


Which one of these are prime numers 21 47 87 or 4?

47 is a prime number 21 & 87 divisible by 3, and 4 is divisible by 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.


Twenty one is the prime number between twenty and fifty what is the composite number?

21 is not a prime number.


How do you do prime factorization with the number 21?

3 x 7 = 21, since both factors are prime, that is the prime factorization of 21.


Are 17 and 21 prime numbers?

17 is a prime number, but 21 is not (21 = 3 * 7).


Which of these numbers is not a prime number A 21 B 31 C 41?

21 is not a prime.