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9, 21, and 39 are divisible by three, so they are composite.
3, 17, and 41 have only two factors, 1 and itself, so they are prime.
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Is 3 13 17 21 23 25 a prime number?
3, 13, 17, 23 are prime numbers. The others are not.
Which number is a composite number 47 13 17 21?
21 is a composite number, as it can be divided by 7 and 3. The other three numbers are prime numbers and do not divide into anything besides themselves.
What are the prime numbers between 10 and 21?
The prime numbers between 10 and 21 are 11, 13, 17, and 19.
How many prime numbers are between 10 and 21?
Four. The prime numbers between 10 and 21 are 11, 13, 17, and 19.
Is 25 and 21 prime numbers?
None of them is a prime number.
Are 17 and 21 prime numbers?
17 is a prime number, but 21 is not (21 = 3 * 7).
Is 3 13 17 21 23 25 a prime number?
3, 13, 17, 23 are prime numbers. The others are not.
Are 21 and 11 prime numbers?
11 is a prime number but 21 is not a prime number as it is divisible by 3.
Which number is a composite number 47 13 17 21?
21 is a composite number, as it can be divided by 7 and 3. The other three numbers are prime numbers and do not divide into anything besides themselves.
What are the prime numbers between 10 and 21?
The prime numbers between 10 and 21 are 11, 13, 17, and 19.
Are 17 and 21 relatively prime numbers?
Yes.
What odd number between 11 and 21 is the product of two prime numbers?
13 is prime so it is not the number. 15 is the product of 3 and 5, two prime numbers, so it fits the conditions. 17 is prime so it is not the number. 19 is prime so it is not the number. 15 is the only odd number between 11 and 21 that fits the conditions. However, if 21 is included in the range, it also is the product of two prime numbers: 3 x 7.
How many prime numbers are between 10 and 21?
Four. The prime numbers between 10 and 21 are 11, 13, 17, and 19.
Which of these numbers is not a prime number A 21 B 31 C 41?
21 is not a prime.
Is 25 and 21 prime numbers?
None of them is a prime number.
What are prime number greater than 21?
The prime numbers greater than 21 are 23, 29, 31, 37, 41, 43, 47, etc.
What are all the prime numbers from 1-21?
The prime numbers from 1 to 21 are 2, 3, 5, 7, 11, 13, 17, and 19.
