A prime number is any integer evenly divisible by only itself, and the number 1. Since 21 is divisible by 3 and 7, it is a composite number, not a prime number.No, 21 is not a prime number.21 is divisible by 1, 3, 7, & 21No. 21=3*7

There is an infinite number of prime numbers that are greater than 21. The next prime number after 21 is 23.

11 is a prime number but 21 is not a prime number as it is divisible by 3.

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.

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

3 * 7 = 21 21 is not prime

Who says it is? 21 is a composite number!

21 is a composite number

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

21 is not a prime.

No, 21 is not a prime number.

21 has two prime factors, 3 and 7.

3 is a prime factor of 12 and of 21.

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.

21 isn't a prime number because it has more factors than just itself and 1 3x7=21 21x1=21

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

The prime factorization of 21 is 3 x 7.

21 is a composite number.

21 is a composite number.

21 22 23 24 which is the prime number

21 = 3 x 7 both 3 and 7 are prime numbers

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

67 is a prime number, but 21 isn't. A prime number can only be evenly divided by '1' and itself. 21 can be evenly divided by 1, 3, 7, and 21.

Trending Questions

Asked By Wiki User

How long does it take to cook a 23 pound turkey in an oven?

Asked By Wiki User

How long do you cook a turkey?

Asked By Wiki User

Hottest Questions

Previously Viewed

clearIs the prime number 21 is a prime number?

Asked By Wiki User

Unanswered Questions

What is the conflict of the story of sinigang?

Asked By Wiki User

How will understanding of attitudes and predisposition enhance teaching?

Asked By Wiki User

What is the contribution of candido bartolome to gymnastics?

Asked By Wiki User

Who of the proclaimers was married to a little person?

Asked By Wiki User

Copyright ยฉ 2020 Multiply Media, LLC. All Rights Reserved. The material on this site can not be reproduced, distributed, transmitted, cached or otherwise used, except with prior written permission of Multiply.