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21 is a composite number because it has more than two factors

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โˆ™ 2013-12-07 13:42:06
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Q: Is 21 a prime composite or neither number?
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Related questions

Is the number 21 prime composite or neither?

3 * 7 = 21 21 is not prime


Is 21 a prime composite or neither?

Composite


Is these prime or composite or neither 15 21 31 26 61?

31 and 61 are prime, the rest composite.


Is this number prime or composite 21?

A prime number has only 2 factors which are 1 and itself. Composite numbers are everything else except 1 and 0. 1 and 0 are neither prime, nor composite. 21 is composite.


Are these numbers prime or composite 21?

21 is a composite number. A prime number has only 2 factors which are 1 and itself. Composite numbers are everything else except 1 and 0. 1 and 0 are neither prime, nor composite.


Is 21 a prime number of composite?

21 is a composite number


What are the factors of 21 is it composite or prime?

21 is a composite number. A prime number has only 2 factors which are 1 and itself. Composite numbers are everything else except 1 and 0. 1 and 0 are neither prime, nor composite.


Is number 21 prime or composite?

number 21 is prime


Is 21 a composite number or prime number?

Composite


Is 21 a prime or composite number why?

composite because it has more than two factors.


What prime numbers 21?

A prime number has only 2 factors which are 1 and itself. Composite numbers are everything else except 1 and 0. 1 and 0 are neither prime, nor composite. 21 is composite.


Is 21 prime or a composite number?

Composite.


Is 21 prime composite or neither?

A prime number can only have adivisorof itself and 1.Both 3 and 7 divide 21, so it cannot be a prime number.I.e.: 21/3 = 7 and 21/7 = 3A composite number has at least 1 divisor, and we already determined that both 3 and 7 are divisors, so:21 is a composite number21 is a composite number.


Is 21 a prime or composite number?

Composite, 21=3*7


What makes 21 a composite number?

Mathematically, 21 is a composite number because it fails to meet the definition of a prime or neither prime nor composite number. It meets the rule for a composite number.Prime Number - Any number whom's only two factors are one and itself, and is neither 0 nor 1, is prime.Composite Number - Any number with other factors than one and itself, and is neither 0 nor 1, is composite.Neither Composite Nor Prime - Is only 0 and 1.


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 23 or 21 composite?

23 is prime. 21 is composite as it is 7x3. A prime number has only 2 factors which are 1 and itself. Composite numbers are every other positive integer except 1 and 0. 1 and 0 are neither prime, nor composite.


Is the prime number 21 is a prime number?

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


Why is 21 a prime number?

Who says it is? 21 is a composite number!


21 a prime or a compostie?

21 is a composite number.


Is 21 prime or compostie?

21 is a composite number.


Why is 21 composite and not prime?

21 has the factors 21,1,7,3. A prime number has only 2 factors which are 1 and itself. Composite numbers are everything else except 1 and 0. 1 and 0 are neither prime, nor composite.


Is 21 and 31 a prime number?

21 is composite number that is a multiple of 3. 31 is a prime number.


Is 23 21 19 prime or composite?

19 and 23 are prime numbers whereas 21 is a composite number


Which number is not a prime or a composite number 21 15 8 and 1?

1 is not composite or prime.