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The sum of two prime numbers will be composite unless one of the prime numbers is 2.

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Q: If you add a prime number to itself is the the sum composite or prime?
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Related questions

If you add a prime number to itself is the sum composite or prime?

Composite.


If you add a prime number to itself is the sum prime or composite?

Composite.


Is 7 a prime number or a composite number?

A prime number, since nothing can add up to it.It has no factors other than itself and one.


Is 327 a prime number or a composite number?

If you add the digits together, you get 12. Since 12 is divisible by 3, 327 is also divisible by 3.


Is the addition of two composite numbers also a composite number?

Not necessarily. For example 15 and 16 are composite numbers. They add to 31, which is a prime number. Similarly, the composite numbers 20 and 21 add up to 41, which is a prime number.


What kind of number do you get when you add 2 prime numbers?

composite


What is the number when you add or multiply by itself you get the same number?

Prime number


Is 267 prime or composite?

267 is a composite number - since the digits of the number add up to a multiple of three, it is divisible by 3. Its prime factorization is 3 x 89 = 267.


Is 417 a prime number or a composite number?

Answer:417 is not a prime number. It is a composite number.Definition:A prime number has exactly two factors: 1 (also known as unity) and itself. A composite number has more than two factors; in other words, it has at least one factor besides 1 and itself.Explanation:Any number for which the digits add to a number divisible by 3 is also divisible by 3, so it has 3 as a factor. The sum of the digits of 417 is 4 + 1 + 7 = 12, which is divisible by 3. Thus, 417 is also divisible by 3, so it is a composite number.417 is a composite number. A prime number has only 2 factors which are 1 and itself. Composite numbers are everything else except 1 and 0. 1 and 0 are neither prime, nor composite.


Is 201 a prime or composite number?

201 is a composite number because it has more than two factors. If the digits of a number add up to a multiple of three, then the number itself is a multiple of 3. 2+0+1=3, so 201 is divisible by 3 and therefore composite.


Is the number 4 a composite number?

Yes it is, the numbers that can add up to 4 are 1, 2 and 4. A prime number is a number that can only go to itself and 1 evenly, composite have atleast 1 other number that goes into it perfectly. (that's what she said)


Is prime number less that 9 is equivalent to composite numbers less than 12?

You may mean: 3 and 5 are prime numbers that add up to the composite number of 8

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