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19 is a Prime number. Its only factors are 1 and 19.
21 is a composite number. Its factors are 1, 3, 7, and 21.
23 is a prime number. Its only factors are 1 and 23.
Wiki User
∙ 2012-01-10 23:06:16
Wiki User
∙ 2014-02-21 14:06:3219 and 23 are prime numbers whereas 21 is a composite number
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Is the numbers 19 21 and 23 a composite number?
No, they are three numbers, not one. 21 is composite.
Is 15 17 19 21 23 25 27 29 and 31 prime or composite?
17, 19, 23, 29 and 31 are prime. 15, 21, 25 and 27 are composite..
Which one is a prime number 19 21 or 23?
19 and 23 are prime.
What is a composite number 21 55 77 93 23?
21, 55, 77, and 93 are composite numbers. 23 is a prime.
Is 23 or 21 composite?
23 is prime. 21 is composite as it is 7x3. A prime number has only 2 factors which are 1 and itself. Composite numbers are every other positive integer except 1 and 0. 1 and 0 are neither prime, nor composite.
Is 19 21 or 23 composite?
21 is composite. 19 and 23 are prime.
Is the numbers 19 21 and 23 a composite number?
No, they are three numbers, not one. 21 is composite.
Is 15 17 19 21 23 25 27 29 and 31 prime or composite?
17, 19, 23, 29 and 31 are prime. 15, 21, 25 and 27 are composite..
Which is a composite number 19 21 23?
21 is composite.
What is 18 19 20 21 22 23 24 25 are they composite or prime?
All the numbers are composite except the ones in bold: 18 19 20 21 22 23 24 25.
Which one is a prime number 19 21 or 23?
19 and 23 are prime.
Which is a composite Number 15 17 19 or 23?
15 is composite number 17, 19 and 23 are prime numbers.
What are the factors and prime factors of 19 21 and 23?
1 and 19; 19 is prime. 1, 3, 7 and 21; 3 and 7 are prime. 1 and 23; 23 is prime.
What is a composite number 21 55 77 93 23?
21, 55, 77, and 93 are composite numbers. 23 is a prime.
Is 23 or 21 composite?
23 is prime. 21 is composite as it is 7x3. A prime number has only 2 factors which are 1 and itself. Composite numbers are every other positive integer except 1 and 0. 1 and 0 are neither prime, nor composite.
Is 13 15 17 19 21 23 25 27 29 prime numbers?
They are all prime numbers except for 15 21 25 and 27 which are composite numbers
Is 23 and 66 prime or composite?
23 is prime, 66 is composite.
