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Q: What 2 prime number has the sum of 20?
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If an age is a prime number from 10 to 20 and the sum of the number is also prime what is the age.?

111 + 1 = 2


What are 2 even prime numbers for the sum of 20?

There is only one even prime number: 2. So, representing 20 as a sum of even prime numbers would be 2 + 2 + 2 + 2 + 2 + 2 + 2 + 2 + 2 + 2.


Which even prime numbers are the sum of 20?

There is only one prime number and it is '2' You cannot have any other even prime number


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.


What are two prime numbers less than 20 whose sum is also a prime number?

2 + 3 = 5


Find the sum of the prime factors of 20?

Factors for 20 are: 1, 2, 4, 5, 10, 20 Prime Factors: 2, 5 sum of prime factors = 2 + 5 = 7


What 3 prime numbers have the sum of 3?

There are not three prime numbers that have the sum of 3. The smallest prime number is 2. If all three prime numbers were 2, the sum would 2 + 2 + 2 = 6, so that is the smallest number that is the sum of three prime numbers.


When adding 2 prime number will the answer be prime?

The sum of any two prime numbers may or may not be prime. The sum of the two prime numbers 2 and 3 is the prime number 5, and the sum of the two prime numbers 5 and 7 is the composite number 12.


What prime number less than 20 can be written as a sum of differrent primes?

2 + 3 = 5


Does the sum of two prime numbers equal a prime number?

If one of the two numbers is 2, the sum of two prime numbers may sometimes be a prime number. Examples of this are 2 + 11 = 13, 2 + 521 = 523, 2 + 281 = 283. There are an infinite number of similar examples where the sum of 2 plus a prime is another prime. However if neither number is 2, then the sum of two prime numbers is always an even number greater than 2 and therefore composite.


What are 2 prime numbers whose sum is a prime number?

2 and 3.


What is the sum of the prime factors of 20?

The prime factors are: 2 and 5 (2+5 = 7)