0
What else can I help you with?
Is the sum of two primes even?
Yes. all prime numbers are odd numbers so the sum of any two will be an even number.
How many of the prime numbers between 10 and 20 can be written as the sum of two primes?
All prime numbers greater than 2 are odd numbers. For an odd prime to be written as the sum of two primes, one of the primes must be 2 because two odd primes will produce an even sum. 11 cannot be written as the sum of two primes. 13 = 2 + 11. 17 cannot be written as the sum of two primes. 19 = 2 + 17.
Is the sum of two prime numbers always a prime numer?
It is not. Of the infinitely many primes only one (the number 2) is even, the rest are all odd. The sum of any two primes other than 2 is even and therefore not a prime. If one of the primes in the sum is 2 then the sum is a prime only if the other is the lower of a pair of twin primes. So, while it is possible, it is certainly more likely that the sum is a composite.
Is the sum of prime numbers cannot be a prime?
Not true. 2 + 3 = 5, where all three are primes. One of the primes in the sum must be 2, otherwise both primes would be odd and their sum would be even (and >2) and therefore not prime. Such primes: p and p+2 [3 and 5 in the above example] are known as twin primes and there are infiitely many twin primes.
What are the odd numbers between 10 and 30 as the sum of three odd primes?
10
What 2 prime numbers equal 221?
There are no two primes whose sum is 221.
What two prime numbers equal 209?
There are no two primes whose sum is 209.
What 2 odd primes equal the sum of 10?
The prime numbers 3 an 7 are both odd and sum to 10.
What are the three odd primes with the sum of 14?
There are not three odd primes with the sum of 14. The sum of three odd primes will be an odd number.
What is the sum of two prime numbers that equal 44?
I assume you are asking the question "what two prime numbers sum to 44". There may be other pairs of prime numbers that sum to 44, but 37 and 7 are both primes and their sum = 44.
Sum of all primes less than 100?
The sum of all prime numbers less than one hundred is 1104.
What 2 numbers make 67 prime?
No primes can be found such that they can sum to 67.
