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What number is it has 90 as a factor thre number is prime 21 is the multiple of the number?
If 21 is a multiple of the number, the number cannot have 90 as a factor.
Is 21 a factor of 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.
Is 21 and 31 a prime number?
21 is composite number that is a multiple of 3. 31 is a prime number.
What is a prime number for 12 and 21?
3 is a prime factor of 12 and of 21.
Is there a prime number that is a multiple of 21?
No, it is not possible. Every multiple of 21 is a composite number. 21 is a composite number and its factors are 1, 3, 7 and 21(4 factors). Any multiple of 21 must have all the factors of 21. So, every multiple of 21 has at least 4 factors. And a prime number has only two factors so, any multiple of 21 can't be prime.
What is the composite number between 20 and 50 whose prime factor is 21?
21 is not a prime factor, it is 3 x 7
What number is a factor of 21 and a prime number?
21 = 3 x 7 both 3 and 7 are prime numbers
What prime number is a factor of 21?
3 and 7
What prime number is a factor of 12 and 21?
3
What are two composite number that has 42 as common multiple how is the prime factor of 42 related to these two numbers?
21 and 6 are two composite numbers that have 42 as a common multiple. One of the prime factors of 42, which is 3, is a prime factor of 21 and 6 as well. The prime factorization of 42 (2 x 3 x 7) includes the prime factorization of 21 (3 x 7) and 6 (2 x 3).
Which number is a factor of 21 an also a prime number?
They are: 3 and 7
Which number is a factor of 21 and also a prime number?
3 and 7
