As long as 2 is not one of the primes that you are adding, then I can guarantee that you will get a composite. 2 is the only even Prime number. Any time you add two odd numbers together, you will get an even number (which is not prime). So if you add them in pairs, you will have three even numbers, which added together result in an even number, so it is composite. If you throw in 2 as one of the primes that you're adding, then your result is odd, and I don't know what else to say about your result.
You may mean: 3 and 5 are prime numbers that add up to the composite number of 8
Composite.
Composite.
if you mean what three prime numbers add up to a prime number then the answer is : 5 + 7 + 11 = 23
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)
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.
The sum of two prime numbers will be composite unless one of the prime numbers is 2.
composite
You may mean: 3 and 5 are prime numbers that add up to the composite number of 8
The first two prime numbers add up to another prime number.
Composite.
Composite.
no, not all prime numbers are closed under addition. why? because, when you add 2 prime numbers you will not always get a prime number. example: 5+3= 8 5 and 3 are prime numbers but their sum is 8 which is a composite number..
No, they are not. You can add two composite numbers, 15 and 14 for example, and get a sum, 29, that is prime.
The only number between 30 and 40 with distinct prime factors which add up to 12 is 35.
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.
If you add two prime numbers that are odd numbers, the sum will be an even number. Because even numbers are divisible by 2, no even number greater than 2 is a prime number. Here are some examples:3 + 3 = 6 which is an even number and thus not a prime number5 + 7 = 12 which is an even number and thus not a prime number11 + 13 = 24 which is an even number and thus not a prime number19 + 41 = 60 which is an even number and thus not a prime numberIf you add a prime number that is odd to the only even prime number (2), you will have an odd number. This odd number might be prime or might be composite. Here are some examples:2 + 3 = 5 which is a prime number2 + 7 = 9 which is a composite number2 + 23 = 25 which is a composite number2 + 41 = 43 which is a prime numberQuestion what is zero = composite0 x 1 = 00 x 4 = 00 x 16 = 00 x 64 = 0