The prime factors of 21 are 3 x 7.
Do you mean, "What is the prime factorization of 21?"
21 is not prime.
21
21 has two prime factors.
The prime numbers from 21 to 40 are 23, 29, 31, and 37.
7 and 3 are prime numbers but 21 is a composite nuber
There are 3 prime numbers from 21 to 35:23, 29 and 31
21 is not a prime.
17 is a prime number, but 21 is not (21 = 3 * 7).
11 is a prime number but 21 is not a prime number as it is divisible by 3.
No, 21 and 23 are not twin prime numbers. Twin primes are pairs of prime numbers that differ by 2, such as 3 and 5, or 11 and 13.
3 and 7 are prime numbers whose product is 21.