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Q: Which is not a prime number out of 13 27 or 29?

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27 is not a prime number.

27

27

27

27 because 3x3x3=27

27 because 9x3=27

A prime number is a number that is divisible only by 1 and itself; it has no other factors. The factors of 7 are 1 and 7. The factors of 13 are 1 and 13. The factors of 27 are 1, 3, 9, and 27. The factors of 29 are 1 and 29. Therefore, 27 is the only one that is not a prime number.

27 is not prime. 27 = 3 X 3 X 3

27 = 3 * 3 * 3

It is 29 which is a prime number

29 is the next prime number after 27. But 27 is not a prime! 3 x 9 = 27!

27 is not prime; it is composite because it has other factors. 27 = 3 x 3 x 3.

27 is not prime number because it has more than two factors. Factors of 27 are 1, 3, 9 and 27.

29 is prime.

29

The answer is 29.

27

If you mean: 12 13 15 17 27 and 29 then the prime numbers are 13 17 and 29

27 isn't prime; it is divisible by 3 and 9, as well.

29

29

29

29 is a prime. 9, 21, and 27 are composites because they are multiples of 3.

41, 29 and 23 are all prime numbers. 27, however, isn't as it is divisible by three.

Just 23 and 29.