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What are the numbers as sum of 2 prime numbers?
The sum of two prime numbers greater than 2 is an even number. The sum of 2 and any other prime number is an odd number.
All odd numbers greater than 7 can be expressed as the sum of three prime numbers. Which 3 prime numbers has a sum of 43?
11,13,19
In how many ways can 47 be written as the sum of two prime numbers?
It cannot be. If 47 is the sum of two prime numbers, one must be an even number and one must be an odd number, because that is the only way to have a sum that is an odd number, such as 47. The only even prime number is 2. The number that with 2 will have a sum of 47 is 45. However, 45 is not a prime number. Therefore, there are not two prime numbers that have a sum of 47.
What two prime numbers added together equals 97?
No two prime numbers added together have a sum of 97. All primes except the number 2 are odd numbers, and two odd numbers added together always produce an even sum.
What are three prime numbers that have the sum of 42?
The only way for three prime numbers to have a sum of 42 is if one of the prime numbers is 2, as 2 is the only even prime number. The other two prime numbers must add up to 40, which can only be achieved by 3 and 37. Therefore, the three prime numbers that have a sum of 42 are 2, 3, and 37.
