Out of that list, only 57 is composite.
Wiki User
∙ 2016-05-10 04:04:2515 is composite number 17, 19 and 23 are prime numbers.
11, 13, 17, 19, 23, 29 are the primes between 10 and 30 so the composite numbers are all the others. 12,14,15,16,18,20,21,22,24,25,26,27,28, and 30 are the composite numbers between 10 and 30.
92 and 78
18 (All even numbers except 2 are composite.)
2, 3, 5, and 9 includes one composite number - 9. 3, 11, 23, and 31 are all prime numbers. 2, 5, 15, and 19 includes one composite number - 19. 7, 17, 29, and 49 includes one composite number - 49.
No, they are three numbers, not one. 21 is composite.
Of those odd numbers, only 57 is composite.
2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31 are prime numbers. they are not composite numbers.
15 is composite number 17, 19 and 23 are prime numbers.
11, 13, 17, 19, 23, 29 are the primes between 10 and 30 so the composite numbers are all the others. 12,14,15,16,18,20,21,22,24,25,26,27,28, and 30 are the composite numbers between 10 and 30.
Prime: 2 3 5 7 11 13 17 19 23 29 Composite: the others
21 is composite. 19 and 23 are prime.
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.
92 and 78
The prime numbers after ten are: 11 13 17 19 23 29
18 (All even numbers except 2 are composite.)
2, 3, 5, and 9 includes one composite number - 9. 3, 11, 23, and 31 are all prime numbers. 2, 5, 15, and 19 includes one composite number - 19. 7, 17, 29, and 49 includes one composite number - 49.