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27 is composite. 27 = 3 * 3 * 3 = 33
15 is composite. 15 = 3 * 5
21 is composite. 21 = 3 * 7
23 is a Prime number. It is only evenly divisible by itself and one.
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Earn +20 ptsQ: A prime from 27 15 21 23?
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Continue Learning about Basic Math
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
Which is a prime numbers 21 23 25 or 27?
It is 23
Which of these is not a prime number 1 3 11 15 17 21 23 27 33 35 37 39 42 45 47 51 61 69 75 77 83?
15 21 33 35 42 45 75 77
Which of these is not a prime number 23 27 29 31?
27
What is the prime numbers between 21 and 33?
there are 3 prime numbers in between 21 and 33... they are 23,29, 31.
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