The prime factorization for 21 is 3x7.
275 = 5 x 5 x 11
3 x 7 x 7 = 147
It can be. 21 is relatively prime with 32.
number 21 is prime
Do you mean, "What is the prime factorization of 21?"
21 is not prime.
The prime factorization for 21 is: 3x73 x 7 = 21
3 * 7 = 21 21 is not prime
11 is a prime number but 21 is not a prime number as it is divisible by 3.
21 is a composite number, not a prime, having prime factors 3x7.
21 = 3x7, and so is not prime, as it can be expressed as the product of multiple prime numbers
3 x 7 = 21, since both factors are prime, that is the prime factorization of 21.