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Q: Are 27 and 15 prime numbers?

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No.

No, odd numbers such as 9, 15, 21, and 27 are not prime.

They are all prime numbers except for 15 21 25 and 27 which are composite numbers

YES

29 and 31 are prime. The rest are composite numbers.

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

No, neither 27 nor 57 are prime numbers.

no

Neither 27 nor 52 are prime numbers. Both are composite numbers, instead.

prime factor of 27 : 3factors of 27: 1, 3, 9, 27

23 and 27 are prime numbers whereas 36 and 39 are composite numbers.

Prime factorization of 27 = 3x3x3

NO. Not all odd numbers are prime like 9, 15, 21, 27,... because they have other factors aside from 1 and itself.

No.

the sum of the first 15 prime numbers is 328 .

Prime numbers which are factors of 15: 3&5.

27 has one prime factor which is 3 and 3*3*3 = 27

15 prime numbers

19 is the prime number.

273, 93, 3, 3The prime numbers are 33

The given numbers of 15 and 35 are not prime numbers but they add up to 50

5, yes. 27, no.

5 is but 15 is not a prime number

The product of the prime numbers 3 and 5 is 15.

29